cmake: Sort CMake target conditions to generate stable targets.cmake.

Found by: brane

* build/generator/gen_cmake.py
  (Generator.write): Sort result of `list(set())` to have stable order of
   target conditions.


git-svn-id: https://svn.apache.org/repos/asf/subversion/trunk@1936132 13f79535-47bb-0310-9956-ffa450edef68

Author: Ivan Zhakov

build/generator/gen_cmake.py

@@ -214,7 +214,7 @@ def write(self):
         else:
           install_target = False
 
-        enable_condition = list(set(enable_condition))
+        enable_condition = sorted(list(set(enable_condition)))
         if len(enable_condition) > 0:
           enable_condition_str = " AND ".join(enable_condition)
         else: