omniorb: needs thread support

Fixes:

   http://autobuild.buildroot.org/results/dfc/dfc083bff04eba68456edd359424293842b6f42d/build-end.log

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/omniorb/Config.in

@@ -1,6 +1,7 @@
 config BR2_PACKAGE_OMNIORB
 	bool "omniorb"
 	depends on BR2_INSTALL_LIBSTDCPP
+	depends on BR2_TOOLCHAIN_HAS_THREADS
 	help
 	  omniORB is a robust high performance CORBA ORB for C++ and Python.
 	  omniORB is largely CORBA 2.6 compliant. omniORB is one of only
@@ -10,5 +11,5 @@ config BR2_PACKAGE_OMNIORB
 
 	  http://omniorb.sourceforge.net/
 
-comment "omniORB needs a toolchain w/ C++"
-	depends on !BR2_INSTALL_LIBSTDCPP
+comment "omniORB needs a toolchain w/ C++, threads"
+	depends on !BR2_INSTALL_LIBSTDCPP || !BR2_TOOLCHAIN_HAS_THREADS