pios_ms5611: added proper device locking
pios_ms5611: changed and fixed test to sanity check value range
pios_ms5611: removed some more unused stuff, cleanups
pios_ms5611: fixed interleaving
pios_ms5611: fixed signedness mismatch in interleaving
pios_ms5611: added division by portTICK_RATE_MS (thanks hosentraeger)
Merge pull request #708 from lilvinz/ms5611_fixes

Ms5611 fixes