QFJ-786: Fix tags getting truncated when converting from string to message using message constructor
 - added test
QFJ-786: Fix tags getting truncated when converting from string to message using message constructor
 - changed Message.parseHeader() to only check ordering of header fields if doValidation==true
 removed some Eclipse specific files
 removed some Eclipse specific files
lots of little code cleanups
use FIX 5.0 SP2 by default
use FIX 5.0 SP2 field value constants