The attached patch removes what appears to be a stray "," in 
testsuite/lib/mi-support.exp

I'd commit as obvious, but I never can be sure with dejagnu.The relevant 
excerpt from testsuite/gdb.log is:

(gdb) ^M
target remote tcp:localhost:2345^M
&"target remote tcp:localhost:2345\n"^M
~"Remote debugging using tcp:localhost:2345\n"^M
~"0x00000000 in ?? ()\n"^M
^done^M
(gdb) ^M

Ok?

Paul