If a call number prefix contains a hyphen, try not to
split on the hyphen. For example, rather than
splitting the call number 'CD-ROM 787.87 EAS'
like this:
CD
-ROM
787.87
EAS
it should be
CD-ROM
787.87
EAS
Signed-off-by: Galen Charlton <galen.charlton@liblime.com>