[glibmm/glibmm-2-62] glibmmconfig.h.in: Add GLIBMM_CAN_USE_THREAD_LOCAL for non-Windows builds

[Kjell Ahlstedt <kjellahl src gnome org>]

commit e1210081f1b583757937c80c15fe4954eacba405
Author: Kjell Ahlstedt <kjellahlstedt gmail com>
Date:   Thu Mar 12 10:32:33 2020 +0100

    glibmmconfig.h.in: Add GLIBMM_CAN_USE_THREAD_LOCAL for non-Windows builds
    
    Define GLIBMM_CAN_USE_THREAD_LOCAL, if its config test program succeeds.

 glib/glibmmconfig.h.in | 2 ++
 1 file changed, 2 insertions(+)
---
diff --git a/glib/glibmmconfig.h.in b/glib/glibmmconfig.h.in
index 5e3dba0d..ef82084f 100644
--- a/glib/glibmmconfig.h.in
+++ b/glib/glibmmconfig.h.in
@@ -98,6 +98,8 @@
 /* Define if glibmm is built as a static library */
 #undef GLIBMM_STATIC_LIB
 
+/* Define if the thread_local keyword is supported. */
+#undef GLIBMM_CAN_USE_THREAD_LOCAL
 
 #endif /* GLIBMM_CONFIGURE */