Sort libtool symbol files

Some entropy had crept in.

Change-Id: I72ae9d16a3aa4b9b66bc8efcda46bdc35edf95c9
Reviewed-on: http://gerrit.openafs.org/11323
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Chas Williams - CONTRACTOR <chas@cmf.nrl.navy.mil>
Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>