Stop printing each .mk filename when generating make files.
Stop printing each .mk filename when generating make files.

Also change the auto-regeneration rule to use the do_cmd
syntax so the output matches other commands.  E.g.,

  ACTION Regenerating Makefile
Updating projects from gyp files...
  ACTION Extracting last change to ...

Review URL: http://codereview.chromium.org/4517005

git-svn-id: e7e1075985beda50ea81ac4472467b4f6e91fc78@857 78cadc50-ecff-11dd-a971-7dbc132099af

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