Merge pull request #65 from wtsi-npg/master

pull tag from master to devel
cache cycle calibration tables when the tile changes rather than doing a lookup for every read
Merge remote branch 'wtsi-npg/devel' into devel
bug fix, cycle_cts now reset when the tile changes
code for error analysis, enable by #define ST_STRUCTURE in calibration_pu.c
bug fix
Merge pull request #66 from srl147/devel

Devel
Merge pull request #67 from wtsi-npg/devel

Devel