(gdb-var-create-regexp)

(gdb-var-create-regexp)
(gdb-var-create-handler): Handle value field in GDB output of
-var-create.
(gdb-max-frames): New variable.
(gdb-stack-buffer, gdb-frames-select): Use it.
(gdb-info-stack-custom): Help user customize gdb-max-frames,
if necessary.
(gdb-get-frame-number): Simplify.