test: avoid false positives in 'cc-no-c-o' script Fixes automake bug#14911. * t/ax/cc-no-c-o.in: Be more careful in determining whether both the '-c' and '-o' options have been passed on the command line to the compiler. In particular, do not spuriously complain in the face of options like '-compatibility_version' or '-current_version' (seen on Mac OS X 10.7). * THANKS: Update. Signed-off-by: Stefano Lattarini <stefano.lattarini@gmail.com>