disable unreliable test in threads.test

guile-threadstest.patch

@@ -0,0 +1,11 @@
+diff -up guile-2.0.13/test-suite/tests/threads.test.threadstest guile-2.0.13/test-suite/tests/threads.test
+--- guile-2.0.13/test-suite/tests/threads.test.threadstest	2014-07-04 15:49:51.000000000 +0200
++++ guile-2.0.13/test-suite/tests/threads.test	2017-02-14 08:40:44.920306211 +0100
+@@ -415,6 +415,7 @@
+ 	    (not (mutex-owner m))))
+ 
+         (pass-if "mutex with owner not retained (bug #27450)"
++          (throw 'unresolved)
+           (let ((g (make-guardian)))
+             (g (let ((m (make-mutex))) (lock-mutex m) m))
+ 

guile.spec

@@ -16,6 +16,7 @@ Requires: coreutils
 
 Patch1: guile-multilib.patch
 Patch2: guile-repltest.patch
+Patch3: guile-threadstest.patch
 
 %description
 GUILE (GNU's Ubiquitous Intelligent Language for Extension) is a library
@@ -45,6 +46,7 @@ install the guile package.
 %setup -q -n guile-%version
 %patch1 -p1 -b .multilib
 %patch2 -p1 -b .repltest
+%patch3 -p1 -b .threadstest
 
 %build