Add export_tarball tool.
Add export_tarball tool.

It creates a .bz2 tarball with all the sources, but without
.svn directories, and has an option to remove files
which are not required for build, and take a lot of space.

Review URL: http://codereview.chromium.org/155863

git-svn-id: de016e52bd170d2d4f2344f9bf92d50478b649e0@21384 0039d316-1c4b-4281-b951-d872f2087c98

axinging/chromium-crosswalk,junmin-zhu/chromium-rivertrail,pozdnyakov/chromium-crosswalk,bright-sparks/chromium-spacewalk,littlstar/chromium.src,pozdnyakov/chromium-crosswalk,nacl-webkit/chrome_deps,nacl-webkit/chrome_deps,pozdnyakov/chromium-crosswalk,chuan9/chromium-crosswalk,mogoweb/chromium-crosswalk,ondra-novak/chromium.src,chuan9/chromium-crosswalk,patrickm/chromium.src,mogoweb/chromium-crosswalk,dednal/chromium.src,timopulkkinen/BubbleFish,jaruba/chromium.src,fujunwei/chromium-crosswalk,jaruba/chromium.src,dushu1203/chromium.src,PeterWangIntel/chromium-crosswalk,mohamed--abdel-maksoud/chromium.src,markYoungH/chromium.src,axinging/chromium-crosswalk,Just-D/chromium-1,mogoweb/chromium-crosswalk,ltilve/chromium,crosswalk-project/chromium-crosswalk-efl,M4sse/chromium.src,krieger-od/nwjs_chromium.src,Just-D/chromium-1,keishi/chromium,fujunwei/chromium-crosswalk,ChromiumWebApps/chromium,Chilledheart/chromium,rogerwang/chromium,markYoungH/chromium.src,junmin-zhu/chromium-rivertrail,Chilledheart/chromium,axinging/chromium-crosswalk,rogerwang/chromium,mohamed--abdel-maksoud/chromium.src,keishi/chromium,ChromiumWebApps/chromium,ltilve/chromium,fujunwei/chromium-crosswalk,robclark/chromium,zcbenz/cefode-chromium,hgl888/chromium-crosswalk,robclark/chromium,TheTypoMaster/chromium-crosswalk,markYoungH/chromium.src,Pluto-tv/chromium-crosswalk,dednal/chromium.src,krieger-od/nwjs_chromium.src,hgl888/chromium-crosswalk-efl,nacl-webkit/chrome_deps,mogoweb/chromium-crosswalk,ChromiumWebApps/chromium,anirudhSK/chromium,nacl-webkit/chrome_deps,krieger-od/nwjs_chromium.src,rogerwang/chromium,Jonekee/chromium.src,anirudhSK/chromium,chuan9/chromium-crosswalk,markYoungH/chromium.src,timopulkkinen/BubbleFish,TheTypoMaster/chromium-crosswalk,rogerwang/chromium,krieger-od/nwjs_chromium.src,axinging/chromium-crosswalk,Just-D/chromium-1,PeterWangIntel/chromium-crosswalk,jaruba/chromium.src,keishi/chromium,patrickm/chromium.src,mohamed--abdel-maksoud/chromium.src,jaruba/chromium.src,rogerwang/chromium,Fireblend/chromium-crosswalk,junmin-zhu/chromium-rivertrail,dednal/chromium.src,markYoungH/chromium.src,hujiajie/pa-chromium,keishi/chromium,robclark/chromium,PeterWangIntel/chromium-crosswalk,hgl888/chromium-crosswalk,jaruba/chromium.src,Just-D/chromium-1,krieger-od/nwjs_chromium.src,hujiajie/pa-chromium,M4sse/chromium.src,hgl888/chromium-crosswalk-efl,jaruba/chromium.src,markYoungH/chromium.src,keishi/chromium,littlstar/chromium.src,anirudhSK/chromium,keishi/chromium,ondra-novak/chromium.src,littlstar/chromium.src,markYoungH/chromium.src,timopulkkinen/BubbleFish,ltilve/chromium,hujiajie/pa-chromium,Fireblend/chromium-crosswalk,Fireblend/chromium-crosswalk,ChromiumWebApps/chromium,pozdnyakov/chromium-crosswalk,krieger-od/nwjs_chromium.src,Jonekee/chromium.src,nacl-webkit/chrome_deps,patrickm/chromium.src,junmin-zhu/chromium-rivertrail,keishi/chromium,robclark/chromium,pozdnyakov/chromium-crosswalk,chuan9/chromium-crosswalk,zcbenz/cefode-chromium,chuan9/chromium-crosswalk,robclark/chromium,dushu1203/chromium.src,mogoweb/chromium-crosswalk,crosswalk-project/chromium-crosswalk-efl,chuan9/chromium-crosswalk,pozdnyakov/chromium-crosswalk,axinging/chromium-crosswalk,ChromiumWebApps/chromium,anirudhSK/chromium,ltilve/chromium,timopulkkinen/BubbleFish,hujiajie/pa-chromium,hgl888/chromium-crosswalk,pozdnyakov/chromium-crosswalk,nacl-webkit/chrome_deps,timopulkkinen/BubbleFish,fujunwei/chromium-crosswalk,robclark/chromium,mogoweb/chromium-crosswalk,rogerwang/chromium,M4sse/chromium.src,hgl888/chromium-crosswalk-efl,zcbenz/cefode-chromium,M4sse/chromium.src,Fireblend/chromium-crosswalk,chuan9/chromium-crosswalk,hgl888/chromium-crosswalk-efl,timopulkkinen/BubbleFish,zcbenz/cefode-chromium,hgl888/chromium-crosswalk-efl,M4sse/chromium.src,mohamed--abdel-maksoud/chromium.src,nacl-webkit/chrome_deps,nacl-webkit/chrome_deps,Jonekee/chromium.src,dushu1203/chromium.src,Pluto-tv/chromium-crosswalk,TheTypoMaster/chromium-crosswalk,markYoungH/chromium.src,TheTypoMaster/chromium-crosswalk,Fireblend/chromium-crosswalk,PeterWangIntel/chromium-crosswalk,hujiajie/pa-chromium,patrickm/chromium.src,crosswalk-project/chromium-crosswalk-efl,M4sse/chromium.src,timopulkkinen/BubbleFish,axinging/chromium-crosswalk,crosswalk-project/chromium-crosswalk-efl,ondra-novak/chromium.src,anirudhSK/chromium,anirudhSK/chromium,hujiajie/pa-chromium,mohamed--abdel-maksoud/chromium.src,keishi/chromium,fujunwei/chromium-crosswalk,dednal/chromium.src,dushu1203/chromium.src,mogoweb/chromium-crosswalk,littlstar/chromium.src,anirudhSK/chromium,Just-D/chromium-1,Chilledheart/chromium,hgl888/chromium-crosswalk,timopulkkinen/BubbleFish,anirudhSK/chromium,axinging/chromium-crosswalk,krieger-od/nwjs_chromium.src,patrickm/chromium.src,M4sse/chromium.src,robclark/chromium,ltilve/chromium,crosswalk-project/chromium-crosswalk-efl,crosswalk-project/chromium-crosswalk-efl,patrickm/chromium.src,axinging/chromium-crosswalk,hujiajie/pa-chromium,Chilledheart/chromium,littlstar/chromium.src,bright-sparks/chromium-spacewalk,jaruba/chromium.src,Jonekee/chromium.src,ondra-novak/chromium.src,Jonekee/chromium.src,zcbenz/cefode-chromium,Just-D/chromium-1,Chilledheart/chromium,zcbenz/cefode-chromium,dednal/chromium.src,Pluto-tv/chromium-crosswalk,axinging/chromium-crosswalk,junmin-zhu/chromium-rivertrail,junmin-zhu/chromium-rivertrail,Just-D/chromium-1,ChromiumWebApps/chromium,jaruba/chromium.src,hujiajie/pa-chromium,ondra-novak/chromium.src,PeterWangIntel/chromium-crosswalk,ChromiumWebApps/chromium,rogerwang/chromium,bright-sparks/chromium-spacewalk,bright-sparks/chromium-spacewalk,TheTypoMaster/chromium-crosswalk,zcbenz/cefode-chromium,patrickm/chromium.src,Pluto-tv/chromium-crosswalk,PeterWangIntel/chromium-crosswalk,pozdnyakov/chromium-crosswalk,fujunwei/chromium-crosswalk,hgl888/chromium-crosswalk,pozdnyakov/chromium-crosswalk,zcbenz/cefode-chromium,Pluto-tv/chromium-crosswalk,ChromiumWebApps/chromium,zcbenz/cefode-chromium,anirudhSK/chromium,Jonekee/chromium.src,nacl-webkit/chrome_deps,hgl888/chromium-crosswalk,TheTypoMaster/chromium-crosswalk,littlstar/chromium.src,ltilve/chromium,bright-sparks/chromium-spacewalk,Fireblend/chromium-crosswalk,hujiajie/pa-chromium,markYoungH/chromium.src,mogoweb/chromium-crosswalk,Pluto-tv/chromium-crosswalk,mohamed--abdel-maksoud/chromium.src,Pluto-tv/chromium-crosswalk,hgl888/chromium-crosswalk-efl,krieger-od/nwjs_chromium.src,ondra-novak/chromium.src,krieger-od/nwjs_chromium.src,junmin-zhu/chromium-rivertrail,Jonekee/chromium.src,keishi/chromium,Jonekee/chromium.src,M4sse/chromium.src,fujunwei/chromium-crosswalk,mohamed--abdel-maksoud/chromium.src,junmin-zhu/chromium-rivertrail,hgl888/chromium-crosswalk,PeterWangIntel/chromium-crosswalk,junmin-zhu/chromium-rivertrail,dednal/chromium.src,timopulkkinen/BubbleFish,crosswalk-project/chromium-crosswalk-efl,hujiajie/pa-chromium,bright-sparks/chromium-spacewalk,Pluto-tv/chromium-crosswalk,M4sse/chromium.src,patrickm/chromium.src,PeterWangIntel/chromium-crosswalk,Pluto-tv/chromium-crosswalk,chuan9/chromium-crosswalk,axinging/chromium-crosswalk,dednal/chromium.src,crosswalk-project/chromium-crosswalk-efl,crosswalk-project/chromium-crosswalk-efl,Jonekee/chromium.src,rogerwang/chromium,jaruba/chromium.src,nacl-webkit/chrome_deps,robclark/chromium,Chilledheart/chromium,patrickm/chromium.src,ChromiumWebApps/chromium,hgl888/chromium-crosswalk,Fireblend/chromium-crosswalk,mogoweb/chromium-crosswalk,chuan9/chromium-crosswalk,jaruba/chromium.src,bright-sparks/chromium-spacewalk,mohamed--abdel-maksoud/chromium.src,junmin-zhu/chromium-rivertrail,timopulkkinen/BubbleFish,hgl888/chromium-crosswalk-efl,markYoungH/chromium.src,mogoweb/chromium-crosswalk,dednal/chromium.src,hgl888/chromium-crosswalk,ltilve/chromium,mohamed--abdel-maksoud/chromium.src,Fireblend/chromium-crosswalk,ondra-novak/chromium.src,bright-sparks/chromium-spacewalk,dednal/chromium.src,Chilledheart/chromium,junmin-zhu/chromium-rivertrail,ChromiumWebApps/chromium,littlstar/chromium.src,hgl888/chromium-crosswalk-efl,axinging/chromium-crosswalk,ChromiumWebApps/chromium,dushu1203/chromium.src,dushu1203/chromium.src,krieger-od/nwjs_chromium.src,markYoungH/chromium.src,ondra-novak/chromium.src,ChromiumWebApps/chromium,rogerwang/chromium,ltilve/chromium,Fireblend/chromium-crosswalk,Just-D/chromium-1,anirudhSK/chromium,bright-sparks/chromium-spacewalk,TheTypoMaster/chromium-crosswalk,anirudhSK/chromium,krieger-od/nwjs_chromium.src,dushu1203/chromium.src,keishi/chromium,ltilve/chromium,dushu1203/chromium.src,Chilledheart/chromium,TheTypoMaster/chromium-crosswalk,zcbenz/cefode-chromium,hujiajie/pa-chromium,anirudhSK/chromium,dednal/chromium.src,keishi/chromium,Chilledheart/chromium,robclark/chromium,robclark/chromium,hgl888/chromium-crosswalk-efl,Just-D/chromium-1,pozdnyakov/chromium-crosswalk,mohamed--abdel-maksoud/chromium.src,fujunwei/chromium-crosswalk,rogerwang/chromium,fujunwei/chromium-crosswalk,mohamed--abdel-maksoud/chromium.src,PeterWangIntel/chromium-crosswalk,M4sse/chromium.src,pozdnyakov/chromium-crosswalk,M4sse/chromium.src,Jonekee/chromium.src,TheTypoMaster/chromium-crosswalk,dednal/chromium.src,timopulkkinen/BubbleFish,hgl888/chromium-crosswalk-efl,dushu1203/chromium.src,dushu1203/chromium.src,nacl-webkit/chrome_deps,dushu1203/chromium.src,ondra-novak/chromium.src,Jonekee/chromium.src,zcbenz/cefode-chromium,littlstar/chromium.src,jaruba/chromium.src