Require spaces around equality comparisons

Commit a1cbe4b5 added a check for spaces around assignments and this
patch extends it to checks for spaces around '=='.  One exception is
virAssertCmpInt where comma after '==' is acceptable (since it is a
macro and '==' is its argument).

Signed-off-by: Martin Kletzander <mkletzan@redhat.com>

tests/virsystemdtest.c

@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2013 Red Hat, Inc.
+ * Copyright (C) 2013, 2014 Red Hat, Inc.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
@@ -273,7 +273,7 @@ mymain(void)
     TEST_SCOPE("demo", "/machine/eng-dept/testing!stuff",
                "machine-eng\\x2ddept-testing\\x21stuff-lxc\\x2ddemo.scope");
 
-    return ret==0 ? EXIT_SUCCESS : EXIT_FAILURE;
+    return ret == 0 ? EXIT_SUCCESS : EXIT_FAILURE;
 }
 
 VIRT_TEST_MAIN_PRELOAD(mymain, abs_builddir "/.libs/virsystemdmock.so")