Bug#22579 use --warning-mode=pedantic and -std=c89 flags when compiling with gcc

- Reorganize include file order to avoid problem with gcc 2.95.3
 - Compiler is confused by forward class declarations

server-tools/instance-manager/command.cc

@@ -17,9 +17,8 @@
 #pragma implementation
 #endif
 
-#include "command.h"
 #include "manager.h"
-
+#include "command.h"
 
 Command::Command()
   :guardian(Manager::get_guardian()),