Add armv7a to the list of architectures recognized by FixArch (and therefore ParseTriple)
Add armv7a to the list of architectures recognized by FixArch
(and therefore ParseTriple)

BUG= https://code.google.com/p/nativeclient/issues/detail?id=3600
TEST= scons arm nonpexe_tests
R=jvoung@google.com

Review URL: https://codereview.chromium.org/21570002

git-svn-id: 721b910a23eff8a86f00c8fd261a7587cddf18f8@11896 fcba33aa-ac0c-11dd-b9e7-8d5594d729c2

Lind-Project/native_client,Lind-Project/native_client,Lind-Project/native_client,Lind-Project/native_client,Lind-Project/native_client,Lind-Project/native_client