Make __gnu_inline__ functions in gnu99 mode work the same way as inline functions in gnu89 mode in terms of redefinitions.

rdar://9559708 .



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@132953 91177308-0d34-0410-b5e6-96231b3b80d8
3 files changed