polygon.cc - added RegionExpanding fn to basecode
GBMUnodeUpdate.cc - tidy includes and rgn_exp code
attribarray.cc, unodes - add unode attributes
bflynns,display,file,lut,nodes,regions,unodes - changes to link with either wx or x11 plotcode
flynns, flynnarray, interface - jkb added FlynnColor
jkb fns for writing gzip files
parseopts - commented out colourmap command line option - clashes with
wx colourmaps
tripoly - split out fn to read poly files. Needed for euler basil so
keep codes the same
