* configure.in: Add stdlib.h to AC_CHECK_HEADERS. Call
BFD_NEED_DECLARATION on malloc, realloc, and free.
* acconfig.h: Add NEED_DECLARATION_MALLOC,
NEED_DECLARATION_REALLOC, and NEED_DECLARATION_FREE.
* configure, config.in: Rebuild.
* defs.h: Include <stddef.h> and <stdlib.h> based on HAVE_*_H
rather than __STDC__. Only declare malloc, realloc, and free if
NEED_DECLARATION_* is defined.
* gdbtk.c (mainWindow): Deleted.
(cleanup_init): Don't destroy main window.
(gdbtk_init): Main window now created by Tk_Init.
* configure.in: Most X checks now handled automatically by Tk.
Use new macros to find Tcl/Tk.
* aclocal.m4: New version for new Tcl/Tk; from Don Libes.
* config.in, configure: Regenerated.
* Makefile.in (TCL, TCL_CFLAGS, TK, TK_CFLAGS, X11_CFLAGS,
X11_LDFLAGS, X11_LIBS): Changed for new Tcl and Tk.
config/m68k/m68kv4.mh, config/mips/{irix4.mh, irix5.mh,
mipsv4.mh}, config/sparc/sun4so2.mh (INSTALL): Removed, figured
out by autoconf.
* config/apollo68v.mh (RANLIB): Removed, figured out by autoconf.
* Makefile.in, configure.in: Converted to use autoconf
* aclocal.m4: New file, local autoconf macro definitions.
* configure: New file, generated with autoconf 2.3.
