Convert several map to nmap
Starting my man.
thoughts
More thoughts.
Cleanup if man produces lines with xxx.
Remove unused DoTestWin().
Have GotoWin() actually check passed in type.
Fix issue if MANPAGER environment variable set.

Removed failed attempt at using vim's internal more.
Convoert s: to <SID> on one call.
More efficient to just call ManLaunch.
Get rid of annoying beeps that occur in some situations.
First pass at getting popping tag stack working.
Use MANWIDTH to format page for the window.