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/maputil.cpp

@@ -190,7 +190,7 @@ bool CloseMemMap(void *memory, size_t dwSize)
   {
   if (memory) {
     // All this must be redesigned
-    int rc = msync((char*)memory, dwSize, MS_SYNC);
+    msync((char*)memory, dwSize, MS_SYNC);
     return (munmap((char*)memory, dwSize) < 0) ? true : false;
   } else
     return false;