clang -cc1 logic for running an action against a set of options. - This should make it easier to build tools that have a clang -cc1 like interface, but aren't actually part of clang -cc1. llvm-svn: 93282
clang -cc1 logic for running an action against a set of options. - This should make it easier to build tools that have a clang -cc1 like interface, but aren't actually part of clang -cc1. llvm-svn: 93282