Merge pull request #814 from ncos/master

Added KNC test target support for alloy.py (--only-targets='knc')
fix for cpuFromIsa
Merge pull request #815 from egaburov/master

fix for cpuFromIsa
alloy.py finds out revision of llvm
Send mail with build error.
Unique way to send e-mail
Some fixes in send function
Merge pull request #816 from Vsevolod-Livinskij/alloy_update

Alloy.py update
Fix for trunk 212388+
Merge pull request #817 from Vsevolod-Livinskij/hotfix

Fix for trunk 212388
Merge branch 'master' of https://github.com/ncos/ispc into ispc-dev. This merge adds a scratch of the regression testing system