fix build scripts to be fully sh compatible

Apparently source is not supported in sh like it is bash.  Also got
those == again
update verify_branch for new ubuntu-14.04 branch
update merge tool for new ubuntu-14.04 branch
Merge remote-tracking branch 'origin/ubuntu-12.04' into ubuntu-13.04
Merge remote-tracking branch 'origin/ubuntu-13.04' into ubuntu-13.10