STYLE: Update comments in igtlMessageBase for Doxygen.
STYLE: Updated comments in igtlBindMessage.h for Doxygen.
BUG: Fixing inconsistency between the specification and the library for the color table message (type name was different.)
STYLE: Updated comments in igtlColorTableMessage.h for Doxygen. The version number has been incremented due to the previous change (the type name for the color table message type).
STYLE: Update comments in igtlImageMessage.h for Doxygen.
STYLE: Update comments in igtlImageMessage2.h for Doxygen.