Exclude BOOKMARKS from git

modified:   .gitignore
Refine vim settings, closer to classic

Some improvements, partly to make Vim not so similar to Emacs, to improve
reflex separation.

modified:   .gvimrc
	Turn off right and bottom scrollbars (all that were on). They are easy
	to bring back when needed.
modified:   .vimrc
	Do not change the screen size from Vim (but it is OK to do from GVim).
	Enter commented-out set lines for expandtab and smarttab.
	Back laststatus to 1 from 2. Loses the visual confirmation that a
	buffer is modified (but CTRL-G shows it); on the plus side, frees more
	screen space for text.