Implemented ODBC methods

The methods exported by the odbc packages do follow the same naming conventions as the ODBC standard. The methods listed below are implemented in this release.

 SQLAllocHandle 
 SQLBindCol 
 SQLBindParameter
 SQLCancel 
 SQLCloseCursor 
 SQLColumns 
 SQLConnect 
 SQLCopyDesc 
 SQLDescribeCol
 SQLDisconnect 
 SQLEndTran
 SQL_Error_Message 
 SQLExecDirect 
 SQLExecute 
 SQLFetch 
 SQLFetchScroll 
 SQLFreeHandle 
 SQLFreeStmt 
 SQLGetConnectAttr
 SQLGetCursorName 
 SQLGetData 
 SQLGetDiagField 
 SQLGetDiagRec
 SQLGetEnvAttr
 SQLGetFunctions 
 SQLGetInfo
 SQLGetStmtAttr
 SQLGetTypeInfo
 SQL_LEN_BINARY_ATTR
 SQL_LEN_DATA_AT_EXEC 
 SQLNativeSql 
 SQLNumParams 
 SQLNumResultCols 
 SQLParamData
 SQLPrepare 
 SQLPutData 
 SQLRowCount
 SQLSetEnvAttr
 SQLSpecialColumns 
 SQLStatistics
 SQLTables