Renamed tk to tc in erfa.h
Merge pull request #23 from jwoillez/tk_to_tc_fix

Renamed tk to tc in erfa.h
update to latest ERFA source
Update package version info
updated ERFA_LIB_VERSION_INFO to reflect new version
Merge pull request #25 from eteq/sep14-sofa-rel

Update to sofa 20131202_c, prepare for 1.1.1 release