Moved foward declaration of glibtop to break circular #includes

* glibtop.h: Moved foward declaration of glibtop to break circular
	#includes dependencies.

glibtop.h

@@ -24,6 +24,9 @@
 #ifndef __GLIBTOP_H__
 #define __GLIBTOP_H__
 
+typedef struct _glibtop		glibtop;
+
+
 #include <glibtop/global.h>
 
 #include <glibtop_server.h>
@@ -37,10 +40,10 @@
 #define GLIBTOP_MOUNTENTRY_LEN	79
 #endif
 
-typedef struct _glibtop		glibtop;
 
 #include <glibtop/sysdeps.h>
 
+
 struct _glibtop
 {
 	unsigned flags;