[gtkada] Static linking to Gtk libraries for Solaris 2.8

[Jeffrey Creem]

As a side note/caution. Once you create a statically linked executable based
on Gtk. Please make sure you understand
the license requirements for the LGPL. Since I am not a lawyer I can't
really say I understand for sure but in general, you can not "distribute"
this statically linked executable as easily and still remain in compliance
with the LGPL since there is now no way for an end user to upgrade the LGPL
components and continue to run you program.