[PATCH v2 1/2] msidb: Permit specifying tables to import by filename.

[Erich E. Hoover]

v2: import_table() now takes the filename directly, avoiding copying
the filename when it is passed instead of a table name.

[Hans Leidekker]

Signed-off-by: Hans Leidekker <hans(a)codeweavers.com>