[pushed] gdb, gdbsupport: add debug_prefixed_printf, remove boilerplate functions

[Tom Tromey]

>>>>> "Simon" == Simon Marchi via Gdb-patches <gdb-patches@sourceware.org> writes:

Simon> The *_debug_print_1 functions are all very similar, the only difference
Simon> being the subsystem name.  Remove them all and make the logging macros
Simon> use a new debug_prefixed_printf function directly.

Thanks for doing this.

Tom