vcs: Introduce commit with -u and -m parameters
commit is now introduced with -u and -m parameters. This fixes a
couple of problems --
1) hg sometimes doesn't allow commits without username
2) vi(m) is the default editor -- most people can't use it (yet).
\documentclass{article}
\title{A Glimpse at Scipy}
\author{FOSSEE}
date{2010}
\begin{document}
\maketitle
SciPy is open-source software for mathematics, science, and
engineering.
\end{document}