[cfe-dev] AARCH64 - compiler-rt missing some functions

["C. Bergström"]

2nd round of missing stuff in compiler-rt which is just waiting for review
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http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20140210/204960.html
http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20140210/204961.html

The code is pretty small - Can someone please review those patches and 
push it. This blocks quad math stuff on aarch64 from using compiler-rt 
instead of gnu libgcc

__fixtfsi
__fixunstfsi
__floatsitf
__floatunsitf