Merge pull request #665 from ifilippov/master

fix of perf.py
Changing error to warning: mismatch in size/layout of global variable
Merge pull request #667 from ifilippov/warning

Changing error to warning: mismatch in size/layout of global variable
making common.props
supporting targets in perf windows
Merge pull request #668 from ifilippov/tests

Changing examples on windows
fail_db.txt update with LLVM 3.5 (trunk) results on Linux
Merge pull request #669 from dbabokin/fail_db

fail_db.txt update with LLVM 3.5 (trunk) results on Linux
Adding patch for sse4-i16x8 and sse4-i8x16 targets
fail_db update (Linux)
Merge pull request #670 from dbabokin/sext_patch

LLVM patches for sse4-i16x8 and sse4-i8x16 targets