own tm- & .mt files now. Also add sparclite to configdirs.
* go32-xdep.c: Dummy routines for sigsetmask & strlwr.
* config/i386/go32.mh: Nullify def of TERMCAP.
* config/i386/xm-go32.h: Get rid of redef of EIO.
* config/sparc/{sparclite.mh tm-sparclite.h}: New sparclite
specific configs. Very similar to sun4os4, but without solib.
* sparclite/{Makefile.in configure.in}: First cut at making this
dir configgable.
