Refactoring on rulesProperties class

Among of other things the merge process was improved to detect if
certain properties were set on the origin rule set.

examples/multiprocess_c/multi.c

@@ -15,11 +15,13 @@
 
 #include <modsecurity/modsecurity.h>
 #include <modsecurity/transaction.h>
+#include <modsecurity/rules.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 #include <unistd.h>
-
+#include <sys/types.h>
+#include <sys/wait.h>
 
 #define FORKS 5
 #define REQUESTS_PER_PROCESS 100

examples/simple_example_using_c/test.c

@@ -18,6 +18,7 @@
 #include "stdlib.h"
 
 #include "modsecurity/modsecurity.h"
+#include "modsecurity/rules.h"
 
 
 char main_rule_uri[] = "basic_rules.conf";