Handle statistic tables on data load

mbdump-stats.tar.bz2 now append "statistics." to table names:

root@i3-mysql-ngs:/opt/mbzdb# tar tvjf replication/mbdump-stats.tar.bz2 
-rw-r--r-- musicbrainz/musicbrainz 29 2013-03-02 01:30 TIMESTAMP
-rw-r--r-- musicbrainz/musicbrainz 15818 2013-03-02 02:31 COPYING
-rw-r--r-- musicbrainz/musicbrainz   213 2013-03-02 02:31 README
-rw-r--r-- musicbrainz/musicbrainz     6 2013-03-02 02:20 REPLICATION_SEQUENCE
-rw-r--r-- musicbrainz/musicbrainz     3 2013-03-02 01:30 SCHEMA_SEQUENCE
-rw-r--r-- musicbrainz/musicbrainz 77151050 2013-03-02 02:20 mbdump/statistics.statistic
-rw-r--r-- musicbrainz/musicbrainz     7248 2013-03-02 02:20 mbdump/statistics.statistic_event
root@i3-mysql-ngs:/opt/mbzdb#

This patch would remove it from the table name before issuing the LOAD DATA INFILE.