[PATCH] Improve maint print symbols,psymbols,msymbols

[Doug Evans]

Doug Evans <xdje42@gmail.com> writes:
> Hi.
>
> More old sandbox spring cleaning.
>
> At the time I needed this, I used it a lot.
> I've since also added msymbol improvements if only for consistency sake.
> It's helpful to have more control over what to print,
> and to have the output appear on the screen
> without having to go looking for it. Bleah.
>
> 2016-04-20  Doug Evans  <xdje42@gmail.com>
>
> 	* NEWS: Document new syntax for "mt print symbols", "mt print psymbols"
> 	and "mt print msymbols" commands.
> 	* psymtab.c (DEV_TTY): Delete.
> 	(dump_psymtab_addrmap): Don't dump if psymtabs_addrmap is NULL.
> 	(maintenance_print_psymbols): Rewrite for new syntax:
> 	mt print psymbols [-objfile objfile] [-pc address] [outfile]
> 	mt print psymbols [-objfile objfile] [-source source] [outfile]
> 	(_initialize_psymtab): Update help text.
> 	* symmisc.c (maintenance_print_symbols): Rewrite for new syntax:
> 	mt print symbols [-pc address] [outfile]
> 	mt print symbols [-objfile objfile] [-source source] [outfile]
> 	(maintenance_print_msymbols): Rewrite for new syntax:
> 	mt print msymbols [-objfile objfile] [outfile]
> 	Only print symbols for the current progspace.
> 	(_initialize_symmisc): Update help text.
>
> 	doc/
> 	* gdb.texinfo (Symbols): Update docs for symbol printing maintenance
> 	commands.
>
> 	testsuite/
> 	* gdb.base/maint.exp: Update tests for maint print symbols, psymbols
> 	and msymbols.

Missed this bit of cleanup that can now be done.
I'll include it when checking in.

--- symmisc.c=	2016-04-20 10:21:41.989332611 -0700
+++ symmisc.c	2016-04-20 10:31:41.049944151 -0700
@@ -40,10 +40,6 @@
 
 #include "psymtab.h"
 
-#ifndef DEV_TTY
-#define DEV_TTY "/dev/tty"
-#endif
-
 /* Unfortunately for debugging, stderr is usually a macro.  This is painful
    when calling functions that take FILE *'s from the debugger.
    So we make a variable which has the same value and which is accessible when