The gladeui autodetection has been improved and the premature expansion
of the catalogdir variable is now avoided. Furthermore, it is now possible
to explicitely specify the path at configure time, skipping the gladeui
The build system gracefully support the --as-needed linker flag and has
been improved to support "make distcheck" without errors.
gtk2panel now has a --version argument so automake compatibility level
can be raised to gnits.