coral: Coral kernel must load liblcg_*.dylib on Darwin

By default Coral loads shared libraries named liblcg_*.so even on
Darwin. Move patch #0 from a wrong place, %isonline, to %isdarwin.
Patch #0 sets Coral plugin manager to load liblcg_*.dylib on Darwin.

Signed-off-by: David Abdurachmanov <davidlt@cern.ch>
Remove Coral obsolete patches

Signed-off-by: David Abdurachmanov <davidlt@cern.ch>
Merge pull request #196 from davidlt/fix-cleanup-darwin-coral

[CMSSW_7_0_X] Cleanup and bugfix for Coral on Darwin