Tag 3.4.2 release using new naming convention.

llvm-svn: 213541

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SVN tag also included these previous commits:

Author: Bill Wendling <isanbard@gmail.com>
Date: Tue Dec 24 06:53:54 2013 +0000

    Creating release candidate final from release_34 branch
    
    llvm-svn: 197958
Merging r195646:
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r195646 | rengolin | 2013-11-25 07:00:27 -0800 (Mon, 25 Nov 2013) | 1 line

Work-around for ClamAV uncertainty in test-suite
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llvm-svn: 195738
3 files changed