glib: Fix static usage of glib on win32

When glib is built static, the threads and clock code are not
initialized since DllMain is never run. Instead, initialize them from
the glib constructor.

https://bugzilla.gnome.org/show_bug.cgi?id=678387

glib-patches/patchlist

@@ -6,3 +6,4 @@ no-pkg-config.patch
 no-gettext.patch
 cross-compiling.patch
 static-only.patch
+win32-static-init.patch

glib-patches/win32-static-init.patch

@@ -0,0 +1,32 @@
+When glib is built static, the threads and clock code are not
+initialized since DllMain is never run. Instead, initialize them from
+the glib constructor.
+
+https://bugzilla.gnome.org/show_bug.cgi?id=678387
+
+diff --git a/glib/glib/glib-init.c b/glib/glib/glib-init.c
+index f4edd5c..3ec89a0 100644
+--- a/glib/glib/glib-init.c
++++ b/glib/glib/glib-init.c
+@@ -225,6 +225,10 @@ glib_init (void)
+ 
+ HMODULE glib_dll;
+ 
++#endif
++
++#if defined (G_OS_WIN32) && !defined (GLIB_STATIC_COMPILATION)
++
+ BOOL WINAPI
+ DllMain (HINSTANCE hinstDLL,
+          DWORD     fdwReason,
+@@ -261,6 +265,10 @@ G_DEFINE_CONSTRUCTOR(glib_init_ctor)
+ static void
+ glib_init_ctor (void)
+ {
++#ifdef G_OS_WIN32
++  g_clock_win32_init ();
++  g_thread_win32_init ();
++#endif
+   glib_init ();
+ }
+ 

glib/glib/glib-init.c

@@ -225,6 +225,10 @@ glib_init (void)
 
 HMODULE glib_dll;
 
+#endif
+
+#if defined (G_OS_WIN32) && !defined (GLIB_STATIC_COMPILATION)
+
 BOOL WINAPI
 DllMain (HINSTANCE hinstDLL,
          DWORD     fdwReason,
@@ -261,6 +265,10 @@ G_DEFINE_CONSTRUCTOR(glib_init_ctor)
 static void
 glib_init_ctor (void)
 {
+#ifdef G_OS_WIN32
+  g_clock_win32_init ();
+  g_thread_win32_init ();
+#endif
   glib_init ();
 }