Add generated help text which provides the list of available target names (and LOAD= module names). Review URL: http://codereview.chromium.org/100130
Add generated help text which provides the list of available target
names (and LOAD= module names).
Review URL: http://codereview.chromium.org/100130

git-svn-id: e7e1075985beda50ea81ac4472467b4f6e91fc78@447 78cadc50-ecff-11dd-a971-7dbc132099af

bnoordhuis/gyp,azunite/gyp,bulldy80/gyp_unofficial,Phuehvk/gyp,mumble-voip/libmumble-gyp,bpsinc-native/src_tools_gyp,adblockplus/gyp,channing/gyp,bulldy80/gyp_unofficial,svn2github/gyp,tarc/gyp,saghul/gyn,amoikevin/gyp,svn2github/gyp,MIPS/external-chromium_org-tools-gyp,omasanori/gyp,bnq4ever/gypgoogle,amoikevin/gyp,enkripsi/gyp,geekboxzone/lollipop_external_chromium_org_tools_gyp,pandaxcl/gyp,ttyangf/gyp,yangrongwei/gyp,sanyaade-teachings/gyp,yinquan529/platform-external-chromium_org-tools-gyp,yjhjstz/gyp,AOSPU/external_chromium_org_tools_gyp,LazyCodingCat/gyp,ryfx/gyp,saghul/gyn,bnq4ever/gypgoogle,MIPS/external-chromium_org-tools-gyp,turbulenz/gyp,tarc/gyp,LazyCodingCat/gyp,enkripsi/gyp,openpeer/webrtc-gyp,clar/gyp,lukeweber/gyp-override,okumura/gyp,mumble-voip/libmumble-gyp,Chilledheart/gyp,channing/gyp,springmeyer/gyp,bdarnell/gyp,trafi/gyp,IllusionRom-deprecated/android_platform_external_chromium_org_tools_gyp,carlTLR/gyp,MIPS/external-chromium_org-tools-gyp,mkrautz/gyp-libmumble,clar/gyp,svn2github/gyp,sdklite/gyp,cchamberlain/gyp,luvit/gyp,AOSPU/external_chromium_org_tools_gyp,channing/gyp,yangrongwei/gyp,alexcrichton/gyp,svn2github/gyp,azunite/gyp,Jack-Q/GYP-copy,trafi/gyp,AWhetter/gyp,svn2github/kgyp,okumura/gyp,mumble-voip/libmumble-gyp,MIPS/external-chromium_org-tools-gyp,Jack-Q/GYP-copy,AWhetter/gyp,mkrautz/gyp-libmumble,amoikevin/gyp,okwasi/gyp,mkrautz/gyp-libmumble,IllusionRom-deprecated/android_platform_external_chromium_org_tools_gyp,pyokagan/gyp,duanhjlt/gyp,svn2github/kgyp,Omegaphora/external_chromium_org_tools_gyp,chromium/gyp,tarc/gyp,erikge/watch_gyp,ttyangf/pdfium_gyp,yjhjstz/gyp,sloanyang/gyp,mgamer/gyp,sdklite/gyp,msc-/gyp,openpeer/webrtc-gyp,AWhetter/gyp,mistydemeo/gyp,bulldy80/gyp_unofficial,bnoordhuis/gyp,carlTLR/gyp,lianliuwei/gyp,msc-/gyp,chromium/gyp,channing/gyp,Jack-Q/GYP-copy,Phuehvk/gyp,saghul/gyn,cysp/gyp,sport-monkey/GYP,azunite/gyp,lianliuwei/gyp,chromium/gyp,bnq4ever/gypgoogle,geekboxzone/lollipop_external_chromium_org_tools_gyp,amoikevin/gyp,ttyangf/pdfium_gyp,ttyangf/pdfium_gyp,Danath/gyp,dougbeal/gyp,sloanyang/gyp,sfiera/gyp,erikge/watch_gyp,azunite/gyp_20150930,cchamberlain/gyp,sdklite/gyp,tarc/gyp,Danath/gyp,kevinchen3315/gyp-git,adblockplus/gyp,tarc/gyp,Chilledheart/gyp,yinquan529/platform-external-chromium_org-tools-gyp,sanyaade-teachings/gyp,mgamer/gyp,springmeyer/gyp,duanhjlt/gyp,duanhjlt/gyp,ryfx/gyp,pyokagan/gyp,bnoordhuis/gyp,Jack-Q/GYP-copy,lukeweber/gyp-override,azunite/gyp,kevinchen3315/gyp-git,dougbeal/gyp,sanyaade-teachings/gyp,Omegaphora/external_chromium_org_tools_gyp,bulldy80/gyp_unofficial,Chilledheart/gyp,Jack-Q/GYP-copy,svn2github/kgyp,openpeer/webrtc-gyp,sloanyang/gyp,ttyangf/gyp,mgamer/gyp,Omegaphora/external_chromium_org_tools_gyp,lianliuwei/gyp,AWhetter/gyp,turbulenz/gyp,sport-monkey/GYP,chromium/gyp,alexcrichton/gyp,cysp/gyp,okumura/gyp,omasanori/gyp,sport-monkey/GYP,dougbeal/gyp,xin3liang/platform_external_chromium_org_tools_gyp,lukeweber/gyp-override,yjhjstz/gyp,lukeweber/gyp-override,LazyCodingCat/gyp,okwasi/gyp,brson/gyp,okwasi/gyp,sanyaade-teachings/gyp,msc-/gyp,mapbox/gyp,cchamberlain/gyp,erikge/watch_gyp,yinquan529/platform-external-chromium_org-tools-gyp,mistydemeo/gyp,ryfx/gyp,sdklite/gyp,erikge/watch_gyp,bulldy80/gyp_unofficial,amoikevin/gyp,bnq4ever/gypgoogle,svn2github/gyp,carlTLR/gyp,pandaxcl/gyp,omasanori/gyp,azunite/gyp_20150930,openpeer/webrtc-gyp,msc-/gyp,mapbox/gyp,luvit/gyp,yjhjstz/gyp,sport-monkey/GYP,kevinchen3315/gyp-git,Phuehvk/gyp,ryfx/gyp,ttyangf/pdfium_gyp,brson/gyp,carlTLR/gyp,yangrongwei/gyp,mistydemeo/gyp,ttyangf/gyp,dougbeal/gyp,Phuehvk/gyp,okwasi/gyp,Chilledheart/gyp,android-ia/platform_external_chromium_org_tools_gyp,trafi/gyp,bpsinc-native/src_tools_gyp,azunite/gyp_20150930,sfiera/gyp,bdarnell/gyp,erikge/watch_gyp,LazyCodingCat/gyp,enkripsi/gyp,mgamer/gyp,cchamberlain/gyp,yjhjstz/gyp,LazyCodingCat/gyp,brson/gyp,lianliuwei/gyp,Danath/gyp,geekboxzone/lollipop_external_chromium_org_tools_gyp,bpsinc-native/src_tools_gyp,Danath/gyp,mkrautz/gyp-libmumble,adblockplus/gyp,yangrongwei/gyp,springmeyer/gyp,ryfx/gyp,sanyaade-teachings/gyp,xin3liang/platform_external_chromium_org_tools_gyp,clar/gyp,android-ia/platform_external_chromium_org_tools_gyp,azunite/gyp,dougbeal/gyp,bnoordhuis/gyp,ttyangf/pdfium_gyp,xin3liang/platform_external_chromium_org_tools_gyp,Phuehvk/gyp,bdarnell/gyp,brson/gyp,sport-monkey/GYP,mumble-voip/libmumble-gyp,AOSPU/external_chromium_org_tools_gyp,duanhjlt/gyp,adblockplus/gyp,trafi/gyp,IllusionRom-deprecated/android_platform_external_chromium_org_tools_gyp,saghul/gyn,ttyangf/gyp,mapbox/gyp,luvit/gyp,AWhetter/gyp,saghul/gyn,springmeyer/gyp,bdarnell/gyp,okumura/gyp,luvit/gyp,sloanyang/gyp,bnoordhuis/gyp,android-ia/platform_external_chromium_org_tools_gyp,AOSPU/external_chromium_org_tools_gyp,kevinchen3315/gyp-git,xin3liang/platform_external_chromium_org_tools_gyp,geekboxzone/lollipop_external_chromium_org_tools_gyp,bpsinc-native/src_tools_gyp,clar/gyp,pyokagan/gyp,Danath/gyp,openpeer/webrtc-gyp,bnq4ever/gypgoogle,sdklite/gyp,mapbox/gyp,adblockplus/gyp,mapbox/gyp,sfiera/gyp,cysp/gyp,Chilledheart/gyp,msc-/gyp,enkripsi/gyp,alexcrichton/gyp,pyokagan/gyp,turbulenz/gyp,azunite/gyp_20150930,cysp/gyp,ttyangf/gyp,IllusionRom-deprecated/android_platform_external_chromium_org_tools_gyp,enkripsi/gyp,turbulenz/gyp,pyokagan/gyp,Omegaphora/external_chromium_org_tools_gyp,azunite/gyp_20150930,springmeyer/gyp,clar/gyp,mgamer/gyp,svn2github/kgyp,turbulenz/gyp,pandaxcl/gyp,cchamberlain/gyp,android-ia/platform_external_chromium_org_tools_gyp,pandaxcl/gyp,carlTLR/gyp,omasanori/gyp,svn2github/kgyp,duanhjlt/gyp,pandaxcl/gyp,cysp/gyp,mistydemeo/gyp,chromium/gyp,trafi/gyp,yinquan529/platform-external-chromium_org-tools-gyp,alexcrichton/gyp