Require Apache Ant 1.8 for Android builds
Require Apache Ant 1.8 for Android builds

The Android build system required version 1.8 or later, whereas the default
version installed by apt-get is 1.7.1. Explicitly include the version number.

BUG=
TEST=Running "ant -v" should output the correct version.


Review URL: http://codereview.chromium.org/9837108

git-svn-id: de016e52bd170d2d4f2344f9bf92d50478b649e0@129691 0039d316-1c4b-4281-b951-d872f2087c98

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