[devhelp] Let devhelp link against libgthread as it uses one of its symbols

[Frederic Peters <fpeters src gnome org>]

commit 9c0dbb8c413da2b975e42680c819ca0681b2aa21
Author: Emilio Pozuelo Monfort <pochu27 gmail com>
Date:   Thu Nov 12 09:06:05 2009 +0100

    Let devhelp link against libgthread as it uses one of its symbols

 configure.ac |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 5dcc090..e81e32e 100644
--- a/configure.ac
+++ b/configure.ac
@@ -60,6 +60,7 @@ AC_SUBST(PLATFORM_LDFLAGS)
 AC_SUBST(REQUIRES_LIBWNCK)
 
 PKG_CHECK_MODULES(DEVHELP, [
+  gthread-2.0 >= 2.10.0
   gtk+-2.0 >= 2.10.0
   webkit-1.0 >= 1.1.13
   unique-1.0