r22312: avoid the need of typing 'run' into each gdb xterm

r22312: avoid the need of typing 'run' into each gdb xterm

if someone knows how to tell gdb to only exit
if 'run' exists clean via the if/else logic
please tell me!

see http://davis.lbl.gov/Manuals/GDB/gdb_20.html#SEC194)
but there's no useful example :-(

metze
(This used to be commit 4a95e893087e6e3194cd18289a9bf019d0f0abde)