set IFS before iterating .cvmfsdirtab
FIX: re-assign of $dirtab_path
treat exclusion lines in .cvmfsdirtab
TEST: exclusion patterns in .cvmfsdirtab
.cvmfsdirtab now specifies the actual subdirs
adapt test cases 544, 546 and 549
FIX: dirtab warning message not specific
generalize exclusions to allow for finer control
adapt test case 549
use glob for excludes as well
adapt test case 549
use case-statement for pattern matching
hide 'Ignore'-message in non-verbose mode
add migration of legacy .cvmfsdirtab
hack retrival of .cvmfsdirtab into test 519
extend test 519 to deal with .cvmfsdirtab
Merge pull request #414 from reneme/feature-dirtab_excludes

Feature: Exclude Patterns in .cvmfsdirtab