Revert r262059: committed to the tag instead of the branch

llvm-svn: 262075

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SVN tag also included these previous commits:

Author: Kit Barton <kbarton@ca.ibm.com>
Date: Fri Feb 26 20:31:15 2016 +0000

    Added release notes for PowerPC
    
    llvm-svn: 262059

Author: Hans Wennborg <hans@hanshq.net>
Date: Tue Feb 23 21:40:24 2016 +0000

    Creating release candidate rc3 from release_380 branch
    
    llvm-svn: 261697
    llvm-svn: 261696
    llvm-svn: 261695
    llvm-svn: 261694
    llvm-svn: 261693
    llvm-svn: 261692
    llvm-svn: 261691
    llvm-svn: 261690
    llvm-svn: 261689
    llvm-svn: 261687
    llvm-svn: 261686