pypi-install improvements: --build-here, pypi.search

[eichin]

Today I found pypi-install. There's a big gap between "pypi-install takes a first draft try, installs it, and throws away the intermediate steps" and "you have to glue all of the pieces together by hand". In an attempt to narrow that gap, I added

• --build-here -- creates a directory from the package name, and keeps all of the intermediate results (tells the user where to find the .deb in the end, but doesn't attempt to install it.) Also improves the Quickstart 1 warnings; pypi-install was a "dead end" on the path to good packages, pypi-install --build-here is a "first draft" that you can then polish.
• pypi.search -- lots of packages have StudlyCaps names, which only get in the way; in particular, MANIFEST.in files use the all-lower-case names. If the direct lookup fails, this change just does a pypi.search and sanity checks it a bit. Works perfectly with StudlyCaps vs. lower-case; if it finds more matches, it stops and makes the user pick from the results.

I'll see what else I can do to improve the workflow; my main approach is going to be that "I saw something new at a pycon lightning talk, it's up on pypi, how easily can I get good packages together on my debian system?" "How easily can I share them" will probably be the next step.

[esc]

@eichin : stdeb is somewhat in limbo at the moment, your pull-request will hopefully be tended to sometime, but probably not that soon.