ENH: Add DisplayStatus

Source/cmCPluginAPI.cxx

@@ -536,6 +536,12 @@ void cmRemoveFile(const char *name)
   cmSystemTools::RemoveFile(name);
 }
 
+void cmDisplayStatus(void *arg, const char* message)
+{
+  cmMakefile *mf = static_cast<cmMakefile *>(arg);
+  return mf->DisplayStatus(message, -1);
+}
+
 void cmFree(void *data)
 {
   free(data);
@@ -550,6 +556,7 @@ cmCAPI cmStaticCAPI =
   cmFreeArguments,
   cmSetClientData,
   cmSetError,
+  cmDisplayStatus,
   cmAddCacheDefinition,
   cmAddCustomCommand,
   cmAddDefineFlag,

Source/cmCPluginAPI.h

@@ -57,6 +57,8 @@ typedef struct
   void  (*SetClientData) (void *info, void *cd);
   /* when an error occurs, call this function to set the error string */
   void  (*SetError) (void *info, const char *err);
+  /* display status information */
+  void  (*DisplaySatus) (void *info, const char *message);
   
   /*=========================================================================
   The following functions all directly map to methods in the cmMakefile