bug 737581 - add w764 peptest config. r=mcote
bug 737581 - add w764 peptest config. r=mcote

--HG--
rename : configs/peptest/win7_config.py => configs/peptest/w764_config.py

escapewindow/mozharness,simar7/build-mozharness,lissyx/build-mozharness,kartikgupta0909/build-mozharness,mrrrgn/build-mozharness,escapewindow/mozharness,kartikgupta0909/gittest,mozilla/build-mozharness,walac/build-mozharness,simar7/build-mozharness,kartikgupta0909/gittest,kartikgupta0909/build-mozharness,armenzg/build-mozharness,lundjordan/mozharness,mozilla/build-mozharness,lundjordan/mozharness,lissyx/build-mozharness,mrrrgn/build-mozharness,walac/build-mozharness,kartikgupta0909/mozilla-mozharness,armenzg/build-mozharness,kartikgupta0909/mozilla-mozharness