clang-replace: Layout of test directory now more standard

Test-time dependencies now live within test/clang-replace/Inputs which is more
in line with llvm and clang test suites.

Added 'Inputs' to the lit config's 'exclude' list as with llvm's lit.cfg since
test-time dependencies should not have any lit scripts within.



git-svn-id: https://llvm.org/svn/llvm-project/clang-tools-extra/trunk@189047 91177308-0d34-0410-b5e6-96231b3b80d8