* Makefile.am (glibconfig.h): New rule.
(stamp-gc-h): New rule.  Generate `glibconfig.h'.
* configure.in (AM_CONFIG_HEADER): It is now `config.h'.
(HAVE_BROKEN_WCTYPE): On Solaris, look for iswalnum in -lw before
concluding "broken wctype".
(glibconfig.h): Use AC_OUTPUT_COMMANDS to put generation code into
config.status.
* glib.h: Remove a lot of tests and defines.  All these have been
moved to `configure.in (glibconfig.h)'.
* gerror.c: Include <config.h>.
* gmem.c: Likewise.
* gstrfuncs.c: Likewise.
* gutils.c: Likewise.

This could cause some short term instability.