transmission: needs threads support in toolchain

Fixes http://autobuild.buildroot.net/results/b1010dcecc98d83f5d3d10d13b7b76b87a58d87c

Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>

package/transmission/Config.in

@@ -1,6 +1,7 @@
 config BR2_PACKAGE_TRANSMISSION
 	bool "transmission"
 	depends on BR2_INET_IPV6
+	depends on BR2_TOOLCHAIN_HAS_THREADS
 	select BR2_PACKAGE_ZLIB
 	select BR2_PACKAGE_OPENSSL
 	select BR2_PACKAGE_LIBCURL
@@ -44,5 +45,5 @@ comment "transmission-gtk requires a toolchain with locale support"
 	depends on BR2_PACKAGE_LIBGTK2 && !BR2_ENABLE_LOCALE
 endif
 
-comment "Transmission requires a toolchain with IPv6 support"
-	depends on !BR2_INET_IPV6
+comment "Transmission requires a toolchain with IPv6 and threads support"
+	depends on !BR2_INET_IPV6 || !BR2_TOOLCHAIN_HAS_THREADS