FIX: directory permission on symlink
cvmfs_server now has is_mounted() helper
database creation failure logging
introduce has_repo() helper in test_functions
TEST: integration test for symlinked spool dir
Merge pull request #405 from reneme/fix-symlinked_varspool

FIX: Symlinked Spool Directory /var/spool/cvmfs

This fixes issues with a symlinked /var/spool/cvmfs directory. On the one hand, cvmfs_server mkfs didn't set directory permissions correctly, on the other hand cvmfs_server wasn't able to properly check mount points for paths containing symlinks.

Additionally this contains an integration test for validation.