libxfcegui4 install error without gladeui

[Brian J. Tarricone]

Brian J. Tarricone wrote:

> I guess we could just have a --with-libglade-module-path option to 
> configure so you could override it yourself.  Duh, that's simple enough. 
>   Silly me.

Done and checked in.  Give it a try.

Should probably do something similar for libgladeui's 
module/pixmap/catalog paths, but it can wait.  Just --disable-libgladeui 
for now if it's a problem.

	-b