File disable_demo.patch of Package libsolv

--- CMakeLists.txt.org	2018-03-26 09:34:19.316867295 +0530
+++ CMakeLists.txt	2018-03-26 09:34:34.624762053 +0530
@@ -411,7 +411,7 @@
 IF (ENABLE_PERL OR ENABLE_PYTHON OR ENABLE_RUBY OR ENABLE_TCL)
     ADD_SUBDIRECTORY (bindings)
 ENDIF (ENABLE_PERL OR ENABLE_PYTHON OR ENABLE_RUBY OR ENABLE_TCL)
-ADD_SUBDIRECTORY (examples)
+#ADD_SUBDIRECTORY (examples)
 ADD_SUBDIRECTORY (doc)
 
 MESSAGE (STATUS "Version: ${VERSION}")