XFree86-lib-compat added to XFree86-base dependencies

[Harold L Hunt II]

I added XFree86-lib-compat to the XFree86-base dependencies.

I think this is a wise thing to do because all of the package 
maintainers are busy working on Cygwin 1.5.1 packages and don't have 
time to make a short-lived XFree86 4.3.0/Cygwin 1.3.x release.  The 
XFree86-lib-compat package should help to minimize the number of 
complaints about XFree86 4.2.0 apps not working until after Cygwin 1.5.1 
is released.

Harold