Bug 6517 - [REVISED] koha-create wants "use database" in DEFAULTSQL

Bug 6517 - [REVISED] koha-create wants "use database" in DEFAULTSQL

The revised patch quotes the variable $mysqldb, as suggested by Frère
Sébastien Marie.

This patch makes sure that pointing DEFAULTSQL in /etc/koha/koha-sites.conf
to any (gzip'ed) file produced by mysqldump works, by adding the name of the
database to the end of the call to mysql, when the specified SQL file is
loaded. Files produced with koha-dump-defaults should still work too.

To test:
- Apply the patch
- Create a new package with build-git-snapshot
- Install the package
- Create an SQL file from an existing installation with mysqldump
- gzip the SQL file
- point DEFAULTSQL to the file in /etc/koha/koha-sites.conf
- create a new site with koha-create --create-db

Signed-off-by: Chris Cormack <chrisc@catalyst.net.nz>