- Add (limited) support for UPDATE and DELETE to ODBC tables

(also provide the possibility to issue NOTE warnings)

modified:
  storage/connect/connect.cc
  storage/connect/ha_connect.cc
  storage/connect/ha_connect.h
  storage/connect/odbconn.cpp
  storage/connect/odbconn.h
  storage/connect/plgdbsem.h
  storage/connect/tabodbc.cpp
  storage/connect/tabodbc.h

- Return proper error number when modifying read only tables

modified:
  storage/connect/connect.cc
  storage/connect/ha_connect.cc
  storage/connect/ha_connect.h
  storage/connect/mysql-test/connect/r/bin.result
  storage/connect/mysql-test/connect/r/csv.result
  storage/connect/mysql-test/connect/r/dbf.result
  storage/connect/mysql-test/connect/r/fix.result
  storage/connect/mysql-test/connect/r/ini.result
  storage/connect/mysql-test/connect/r/vec.result
  storage/connect/mysql-test/connect/t/bin.test
  storage/connect/mysql-test/connect/t/csv.test
  storage/connect/mysql-test/connect/t/dbf.test
  storage/connect/mysql-test/connect/t/fix.test
  storage/connect/mysql-test/connect/t/ini.test
  storage/connect/mysql-test/connect/t/vec.test
  storage/connect/table.cpp
  storage/connect/taboccur.cpp
  storage/connect/tabpivot.cpp
  storage/connect/tabutil.cpp
  storage/connect/tabwmi.cpp
  storage/connect/tabxcl.cpp

storage/connect/plgdbsem.h

@@ -593,4 +593,4 @@ int global_open(GLOBAL *g, int msgid, const char *filename, int flags, int mode)
 DllExport LPCSTR PlugSetPath(LPSTR to, LPCSTR name, LPCSTR dir);
 char *MakeEscape(PGLOBAL g, char* str, char q);
 
-bool PushWarning(PGLOBAL, PTDBASE);
+bool PushWarning(PGLOBAL, PTDBASE, int level = 1);