[lit] Allow more file extensions for test cases. This commit splits the file extensions before determining the test format. This allows libc++abi to add assembly-based test cases. git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@283118 91177308-0d34-0410-b5e6-96231b3b80d8 
1 file changed