add test case for volatile cache set
add posibility to flag repository for volatile content
add "volatile" repository and volatile cache class (CVM-263)
Merge branch 'feature-volatile-cacheset' into devel
fix rpmbuild on SL6 32bit
Merge branch 'fix-i386-build' into devel
fix rpmbuild on SL6 32bit
Merge branch 'fix-i386-build' into devel
add new switches to `cvmfs_swissknife scrub`

Conflicts:

	cvmfs/swissknife_scrub.cc
add Alerts enum
replace PrintWarning by more flexible PrintAlert

Conflicts:

	cvmfs/swissknife_scrub.h
FIX: assure canonical path output
TEST: machine readable scrub output