vcs: Remove all mention of use of -ve revision numbering.
The introduction seems forced. It's a neat trick, but doesn't fit into
the flow of things. Now introducing revision numbering with the need
to take diffs between particular commits. Also mention -v and -l
parameters to the log command.
# use glob syntax.
syntax: glob
*.html
*.aux
*.dvi
*.log
*.nav
*.snm
*.toc
*.pdf
*.vrb
*.out
*.sty
*.pyc
*.zip
*.org
*~
.project
.pydevproject
app.yaml
build
tests/coverageResults
*,cover
tests/.coverage
*.git
*.egg-info
eggs
parts
.installed.cfg
bin
develop-eggs
.gitignore
.DS_Store
index.yaml