Add namebase_if_compiler_lt to the testsuite driver
Allows us to use a different name base for foo.stderr for old compilers, e.g. test('tc141', namebase_if_compiler_lt('ghc', '6.9', 'tc141-6.8'), compile_fail, [''])
Allows us to use a different name base for foo.stderr for old compilers, e.g. test('tc141', namebase_if_compiler_lt('ghc', '6.9', 'tc141-6.8'), compile_fail, [''])
mentioned in commit 5764ade4
·mentioned in commit 5764ade4