MXS-2197: Make config.h and service.h C++ headers

This is the first step into converting the other headers into C++.

server/modules/routing/maxinfo/maxinfo.cc

@@ -34,7 +34,7 @@
 #include <time.h>
 
 #include <maxscale/alloc.h>
-#include <maxscale/service.h>
+#include <maxscale/service.hh>
 #include <maxscale/server.h>
 #include <maxscale/router.h>
 #include <maxscale/modinfo.h>

server/modules/routing/maxinfo/maxinfo.h

@@ -29,7 +29,7 @@
 #define MXS_MODULE_NAME "maxinfo"
 
 #include <maxscale/cdefs.h>
-#include <maxscale/service.h>
+#include <maxscale/service.hh>
 #include <maxscale/session.h>
 #include <maxscale/resultset.hh>
 

server/modules/routing/maxinfo/maxinfo_error.cc

@@ -29,7 +29,7 @@
 #include <stdlib.h>
 #include <string.h>
 #include <maxscale/alloc.h>
-#include <maxscale/service.h>
+#include <maxscale/service.hh>
 #include <maxscale/session.h>
 #include <maxscale/router.h>
 #include <maxscale/modinfo.h>

server/modules/routing/maxinfo/maxinfo_exec.cc

@@ -33,7 +33,7 @@
 
 #include <maxscale/alloc.h>
 #include <maxbase/atomic.h>
-#include <maxscale/config.h>
+#include <maxscale/config.hh>
 #include <maxscale/dcb.h>
 #include <maxscale/log.h>
 #include <maxscale/maxscale.h>
@@ -42,7 +42,7 @@
 #include <maxscale/resultset.hh>
 #include <maxscale/router.h>
 #include <maxscale/server.hh>
-#include <maxscale/service.h>
+#include <maxscale/service.hh>
 #include <maxscale/version.h>
 
 #include "../../../core/internal/maxscale.h"

server/modules/routing/maxinfo/maxinfo_parse.cc

@@ -31,7 +31,7 @@
 #include <stdlib.h>
 #include <string.h>
 #include <maxscale/alloc.h>
-#include <maxscale/service.h>
+#include <maxscale/service.hh>
 #include <maxscale/session.h>
 #include <maxscale/router.h>
 #include <maxscale/modinfo.h>