cmd/gomobile: use -buildmode=c-shared
cmd/gomobile: use -buildmode=c-shared

Change-Id: I427a076a8064be0a73830a37aa40f4eca8bdfda6
Reviewed-on: https://go-review.googlesource.com/10894
Reviewed-by: Hyang-Ah Hana Kim <d7e82c3c07f92613bcbf9a1e88f6b96c13caa3b0@gmail.com>

tempbottle/mobile,DanielWorld/mobile,tempbottle/mobile,qskycolor/mobile,b54898533/mobile,zach-klippenstein/mobile,cainiaocome/mobile,golang/mobile,goldcaddy77/mobile,xing/gomobile,ichu501/mobile,0x90sled/mobile,DanielWorld/mobile,b54898533/mobile,cainiaocome/mobile,ichu501/mobile,MaxCy330/mobile,samanalysis/mobile,freeman0211/mobile,goldcaddy77/mobile,steeve/mobile,MaxCy330/mobile,b54898533/mobile,0x90sled/mobile,xing/gomobile,swisspol/mobile,ppamorim/mobile,qskycolor/mobile,freeman0211/mobile,qskycolor/mobile,lonphy23t/mobile,lonphy23t/mobile,ppamorim/mobile,freeman0211/mobile,tempbottle/mobile,0x90sled/mobile,samanalysis/mobile,zach-klippenstein/mobile,swisspol/mobile,ppamorim/mobile,samanalysis/mobile,golang/mobile,tempbottle/mobile,cainiaocome/mobile,goldcaddy77/mobile,steeve/mobile,b54898533/mobile,0x90sled/mobile,ichu501/mobile,golang/mobile,ichu501/mobile,samanalysis/mobile,DanielWorld/mobile,0x90sled/mobile,lonphy23t/mobile,cainiaocome/mobile,golang/mobile,MaxCy330/mobile,DanielWorld/mobile,qskycolor/mobile,samanalysis/mobile,swisspol/mobile,steeve/mobile,goldcaddy77/mobile,cainiaocome/mobile,steeve/mobile,swisspol/mobile,MaxCy330/mobile,goldcaddy77/mobile,zach-klippenstein/mobile,xing/gomobile,xing/gomobile,xing/gomobile,ppamorim/mobile,tempbottle/mobile,lonphy23t/mobile,ichu501/mobile,freeman0211/mobile,ppamorim/mobile,lonphy23t/mobile,swisspol/mobile,zach-klippenstein/mobile,MaxCy330/mobile,b54898533/mobile