Jan,
to avoid possible misunderstandings: Since I removed (and then corrected to
iso8859-1 encoding) one X resource, all my Xaw3d X clients of GNU Emacs
launch. Only in gdb it halted with the once modified xterm.c *while* that
resource was set.
So my task is to check whether GNU Emacs launches from gdb when that faulty
resource is set? (which can be accomplished by running it with arguments "-xrm
'*synchronous: true' -xrm '*pane.menubar.font:
-linotype-optima-black-*-*-*-10-*-*-*-*-*-iso10646-1'")