* yasm.c (options): Allow -i as a synonym for -I.

* yasm.c (options): Allow -i as a synonym for -I.
* yasm-options.c (parse_cmdline): Make unrecognized options warnings instead
of errors.

These two changes make yasm more closely match the nasm command line.  The
long-term fix for this will be making a nasm-like frontend.

Requested by: Brian Gladman <brg@gladman.plus.com>

svn path=/trunk/yasm/; revision=1197