Command line option parsing, configuration parsing

Made config file parsing a bit more fool proof
Config file can now contain a modules-dir element that holds the location of the DSO's
Prepared module loading function to be able to dry-run
Removed some unneeded header files
Added command line options parsing

src/modules.c

@@ -1,9 +1,10 @@
 #include <stdio.h>
+#include <glib.h>
 
 #include "modules.h"
 
 int
-wxmppd_loadModule(char *moduleName)
+wxmppd_loadModule(char *moduleName, gboolean dryRun)
 {
 	printf("Will load module %s\n", moduleName);
 }