This commit adapts our man page for a new consolidated
'misc.h' header file. Along the way, some descriptions
were shortened, others lengthened and whitespace added
in an effort to (hopefully) improve readability a bit.
[ the #include subdirectory was also corrected while ]
[ rearranging & grouping functions into 3 categories ]
Signed-off-by: Jim Warner <james.warner@comcast.net>