This patch allows targets to define weather the instruction mnemonics in asm matcher tables will contain '.' character.
This patch allows targets to define weather the instruction mnemonics in asm matcher tables will contain '.' character.

git-svn-id: a4a6f32337ebd29ad4763b423022f00f68d1c7b7@186388 91177308-0d34-0410-b5e6-96231b3b80d8

lodyagin/bare_cxx,lodyagin/bare_cxx,lodyagin/bare_cxx,lodyagin/bare_cxx,lodyagin/bare_cxx