Global flag -Y, --syntax to specify the type on the command line, if there's no good filename regex to use.  Global variable syntaxstr.  Made some errors in the rc file less fatal


git-svn-id: svn://svn.savannah.gnu.org/nano/trunk/nano@1200 35c25a1d-7b9e-4130-9fde-d3aeb78583b8