* progmodes/gdb-mi.el (gdb-get-buffer, gdb-get-buffer-create):

* progmodes/gdb-mi.el (gdb-get-buffer, gdb-get-buffer-create):
Argument `key' renamed to `buffer-type'.
(gdb-current-context-buffer-name): Do not add thread info to
buffer name when no thread is selected.
(gdbmi-record-list, gdb-shell): Try to handle GDB `shell'
command (bug 3794).
(gdb-thread-selected): Handle `=thread-selected' notification.
(gdb-wait-for-pending): New macro to deal with congestion problems.
(gdb-breakpoints-list-handler-custom): Don't fail on pending
breakpoints.
(gdb-invalidate-disassembly): Use 'fullname instead of 'file. This
fixes problem similar to one described in bug 3947.
(gud-menu-map): More menu items.
(gdb-init-1): Reset `gdb-thread-number' to nil.