This commit was manufactured by cvs2svn to create tag 'fsl-4_1_5'.

Sprout from master 2007-12-19 10:19:28 UTC Duncan Mortimer <duncan.mortimer@ndcn.ox.ac.uk> 'Changes to support Mac OS X 10.5 and Solaris'
Cherrypick from master 2009-11-13 18:20:52 UTC Mark Jenkinson <mark@fmrib.ox.ac.uk> 'Fixed support for user-defined edge thresholds':
    miscpic.cc
    miscpic.h