gthread/: fix up declarations

g_thread_init() is now a deprecated API, so drop G_DISABLE_DEPRECATED
from the CFLAGS for gthread/.  Add the missing declaration for
g_thread_init_with_errorcheck_mutexes() back to deprecated/gthread.h.

glib/deprecated/gthread.h

@@ -257,6 +257,8 @@ gboolean g_once_init_enter_impl          (volatile gsize *location);
 
 GLIB_DEPRECATED
 void     g_thread_init                   (gpointer vtable);
+GLIB_DEPRECATED
+void    g_thread_init_with_errorcheck_mutexes (gpointer vtable);
 
 GLIB_DEPRECATED
 gboolean g_thread_get_initialized        (void);

gthread/Makefile.am

@@ -6,8 +6,7 @@ AM_CPPFLAGS = 				\
 	-DG_LOG_DOMAIN=\"GThread\" 	\
 	-DGLIB_COMPILATION		\
 	@GTHREAD_COMPILE_IMPL_DEFINES@ 	\
-	@GLIB_DEBUG_FLAGS@ 		\
-	-DG_DISABLE_DEPRECATED
+	@GLIB_DEBUG_FLAGS@
 
 EXTRA_DIST +=				\
 		makefile.msc.in		\

gthread/gthread-impl.c

@@ -31,7 +31,7 @@
  * MT safe
  */
 
-#include "glib.h"
+#include <glib.h>
 
 void
 g_thread_init (gpointer init)