libfuse: needs threads

libfuse needs threads, fixes:
http://autobuild.buildroot.net/results/0111a67b9ed5f5f5dfc0725d009ea5c756c1755c

[Peter: update sshfs/unionfs comments to match]
Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>

package/libfuse/Config.in

@@ -1,10 +1,11 @@
 config BR2_PACKAGE_LIBFUSE
 	bool "libfuse"
 	depends on BR2_LARGEFILE
+	depends on BR2_TOOLCHAIN_HAS_THREADS
 	help
 	  FUSE (Filesystem in UserSpacE)
 
 	  http://fuse.sourceforge.net/
 
-comment "libfuse requires a toolchain with LARGEFILE support"
-        depends on !BR2_LARGEFILE
+comment "libfuse requires a toolchain with LARGEFILE and threads support"
+        depends on !BR2_LARGEFILE || !BR2_TOOLCHAIN_HAS_THREADS

package/sshfs/Config.in

@@ -7,10 +7,11 @@ config BR2_PACKAGE_SSHFS
 	select BR2_PACKAGE_OPENSSH
 	depends on BR2_LARGEFILE
 	depends on BR2_USE_WCHAR # glib2
+	depends on BR2_TOOLCHAIN_HAS_THREADS # libfuse
 	help
 	  FUSE filesystem client based on the SSH File Transfer Protocol.
 
 	  http://fuse.sourceforge.net/sshfs.html
 
-comment "sshfs requires a toolchain with LARGEFILE and WCHAR support"
-	depends on !BR2_LARGEFILE || !BR2_USE_WCHAR
+comment "sshfs requires a toolchain with LARGEFILE, WCHAR and threads support"
+	depends on !BR2_LARGEFILE || !BR2_USE_WCHAR || !BR2_TOOLCHAIN_HAS_THREADS

package/unionfs/Config.in

@@ -2,10 +2,11 @@ config BR2_PACKAGE_UNIONFS
 	bool "unionfs (FUSE)"
 	select BR2_PACKAGE_LIBFUSE
 	depends on BR2_LARGEFILE
+	depends on BR2_TOOLCHAIN_HAS_THREADS # libfuse
 	help
 	  A userspace unionfs implementation.
 
 	  http://podgorny.cz/moin/UnionFsFuse
 
-comment "unionfs requires a toolchain with LARGEFILE support"
-	depends on !BR2_LARGEFILE
+comment "unionfs requires a toolchain with LARGEFILE and threads support"
+	depends on !BR2_LARGEFILE || !BR2_TOOLCHAIN_HAS_THREADS