Fixed compiler warnings from connect engine

- clang complains about register in C++
- Removed not used variables
- Fixed bug when printing date in filamdbf.cpp
- Added {} to fix warning about dangling else
- Changed connect_done_func() to be global to remove conflict with header
  files
- Added extra () around assignment in if

storage/connect/javaconn.cpp

@@ -347,7 +347,7 @@ bool JAVAConn::GetJVM(PGLOBAL g)
 /***********************************************************************/
 bool JAVAConn::Open(PGLOBAL g)
 {
-	bool		 brc = true, err = false;
+         bool		 brc = true;
 	jboolean jt = (trace(1));
 
 	// Link or check whether jvm library was linked