Update copyright dates in main.c and string-utils.c
Add descriptions of "-debug find" and "-debug files" to the man page
Resolve xdvi crashing under MacOS after hitting `R' in some situations:
Pull in changes from TeX Live tree:
Avoid duplicate info symbol from .h file; update copyright dates
Fix segmentation fault that occurs when -debug is used with a non-numerical argument.
Minor man page tweaks, and update version to 22.87.05.
eps picture overlays