Bug 19638: Remove false positive obsolete reports (auth_header.marcxml)

Bug 19638: Remove false positive obsolete reports (auth_header.marcxml)

Bug 17898 tries to help users identify reports affected by the move of marcxml to the biblio_metadata table, however, the auth_header table still uses the column name 'marcxml' and so reports as needing updated though it doesn't.

C4::Reports::Guided::convert_sql only converts if the sql query contain biblioitems and marcxml.
We should use the same regexp in the controler script.

Test plan:
Use a sql report that use auth_header.marcxml (see https://wiki.koha-community.org/wiki/SQL_Reports_Library)
After the this the report should not be longer marked as obsolete on the report list view

Replicated bug with the following SQL:
	select marcxml from auth_header;

Patch applied correctly and functioned as expected.

Signed-off-by: Dilan Johnpullé <dilan@calyx.net.au>
Signed-off-by: Josef Moravec <josef.moravec@gmail.com>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>