Use ">" instead of "\*(Gt" for compatibility with mandb
Don't use hyphens as minus signs in man pages

Hyphens (U+2010, entered as '-') and minus signs (U+002D, '\-') are different
typographic entities, and command line options use minus signs. Thus, using a
hyphen in a man page means that users in a UTF-8 locale cannot cut and paste
options, nor search for them easily. This commit converts hyphens to minus signs
where appropriate.
Merge pull request #417 from ryanakca/manfix

Various other fixes to the man pages