Change GELFILT to strings.
Use strings in JOTvars.
Remove all str_ptr in wnpr.
Remove str_ptr from conversion programs.
Change ARRAY to vector in conversion programs.
Change SimplexData to use string.

As before, I'm not happy about using the pointers from c_str() as keys,
but I *think* every user of it uses static_name() which should use a
static string. Hopefully that means the c_str() pointer won't change.
Replace str_ptr in mesh directory.
Remove str_ptr in tess directory.
Remove str_ptr from disp directory.
Remove some more commented code.
Convert some more minor str_ptr's to strings.

I'm not sure why some of these weren't errors though. Some certainly did
appear to be unused at least.
Replace str_ptr's with strings in gui directory.
Remove str_ptr in glut stuff.