[llvm-config] Teach llvm-config about global-isel.

llvm-config can know tell whether or not a build has been configured to support
global-isel.
Use '--has-global-isel' for that.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@262877 91177308-0d34-0410-b5e6-96231b3b80d8
3 files changed