* improved Frelon::Camera multi-thread locking
* added Frelon::Camera register cache on read and write commands
* force 4 channel readout on Frelon::Interface reset
* added std::map value search helpers in MiscUtils



git-svn-id: https://scm.blissgarden.org/svn/lima/trunk@157 45c4679d-1946-429d-baad-37912b19538b