#174 wxwidgets device: use even-odd fill rule when pls->dev_eofill is true

[Alan W. Irwin]

The command-line option -eofill sets pls->dev_eofill to true, and most devices (including the old wxwidgets device) honor that flag by using the even-odd fill rule rather than the default nonzero fill rule. Thus, using the command-line option -eofill makes a spectacular difference for example 27 for most devices, but that is not the case for new wxwidgets since that device currently does not honor pls->dev_eofill and thus always uses the nonzero fill rull. That fundamental deficiency (reported here) for the new wxwidgets device needs to be addressed.

[Alan W. Irwin]

This bug has now been fixed with commit b603fd2. That is,

examples/c/x27c -dev wxwidgets -eofill

now gives the correct even-odd fill rule results which are spectacularly different (many more spaces in the "fill" pages) than the non-zero fill rule results when the -eofill option is not used. Thanks, Phil, for this fix!