[binarycloud-dev] Metabase patches

[Andreas A. (Thyrell) <a.a...@th...>]

Enabled Metabase handling some result Metadata.

I did not test the driver functionality except for MySQL. Further testing of
the drivers is required. Nevertheless the functionality is _expected_ to
work.

Please report errors.

Andi
me
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Added Metabase* functions in metabase_interface.php:
 - MetabaseNumberOfColumns($database, $result)
   Get number of columns in the delivered by result metadata functions

 - MetabaseGetColumnNames($database, $result)
   Return an array with column names delivered by result meta data

Added required methods to driver files:
  - GetColumnNames  (already present in most drivers)
  - NumberOfColumns (added in each driver)
     metabase_ibase.php
     metabase_ifx.php
     metabase_msql.php
     metabase_mssql.php
     metabase_mysql.php
     metabase_oci8.php
     metabase_odbc.php
     metabase_pgsql.php
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