Fix UINT{8,16}_C

-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 According to POSIX, UINT{8,16}_C should result in an integer constant with "the same type as would an expression that is an object of the corresponding type converted according to the integer promotions." And according to C, unsigned char promotes to

setmetamode

Here is the patch to control the handling of the meta key with the setmetamode command on the Cygwin console like the Linux console. I submitted the previous version of this patch three years ago, but it didn't work on Corinna's environment. I, however, wasn't able to find any reason why it didn't