castor: fix linking failures to libuuid on SLC5

- Make UUIDLIBNAME without whitespace, -luuid instead of -l uuid.
- Link to libuuid on all components linking libcastorcommon.so to
  satisfy linker.

Signed-off-by: David Abdurachmanov <David.Abdurachmanov@cern.ch>
Merge pull request #167 from davidlt/fix-castor-slc6-linking-errors

[CMSSW_7_0_X] Fix castor linking libuuid errors on SLC5