Add envsetup as a submodule.
Delete top level envsetup.sh; we now has submodule.
Set envsetup submodule to v1.4 tag.
Set envsetup submodule to v1.4 tag.
Add envsetup.project.sh with our old envsetup.sh customs.
Merge branch 'master' into envsetup-submodule
Merge remote-tracking branch 'origin/envsetup-submodule'
Bump envsetup.sh submodule to latest relase tag.
Clear up SxE's Windows top level envsetup stuff.
Add build/* to .gitignore.
Add local.properties to .gitignore.