Allow to configure debian files

Add possibility to define init, default, preinst, prerm, postinst and
postrm files.
Change debhelper version to work on Lenny
Don't set the buildsystem
Revert "Don't set the buildsystem"

This reverts commit 8092ccc80482c5955d049babaac5325e1bdf2c0e.
Don't force the buildsystem
QuickStart 1 has a bunch of whining about how pypi-install isn't the
  proper way to do it, but the other tools are tedious internal components.
  Instead, add --build-here which does all the setup in a local dir
  named for the package, so that you can do the easy thing if it works,
  and *then* you can refine it in place using the other interfaces,
  if it turns out that there's actually anything wrong...
improve Quickstart 1 by using pypi-install as a starting point, instead of a dead end
Many pypi packages have StuDlyCaps names, but of course *python* names
  (and in particular, the names listed in MANIFEST) don't have them, so
  if that's all we have to go by, we're at another pointless roadblock.

Instead, if the what the user asked for doesn't match perfectly, try a
  pypi.search on the name; if there's exactly one match, run with it
  (if there are multiple matches, display them so the user can easily
  pick the right one and cut&paste it.)

(Simple example: I'm trying to use SST (selenium-simple-test), it
  needs PyVirtualDisplay, which has an unparseable MANIFEST.in; pydist
  ends up reporting "Cannot find installed package that provides
  easyprocess", so I try "pypi-install --build-here easyprocess",
  which failed to find anything.  With this change, I instead get

easyprocess not found, trying search:
EasyProcess 0.1.4
Easy to use python subprocess interface.
Assuming you meant EasyProcess

and it goes on and builds the package, which is what everyone actually
wants...)
Merged with code on -test
Add --release option to specify a specific version of the package.
Fix a few things that weren't Python 3 compatible

Installing on Python 3 requires a 2to3 pass as well,
these are just extra fixes that need to be run before
2to3.
Fix overly nested directories

The first four lines fix a regression introduced by
18af4d6325050c24106d8f9ebd8baad124b36af6.  The rest
removes an unnecessary conditional and unindents the
block.
Replace any newlines or repeated whitespace in the description with a single space.
Generate warning if we stripped any whitespace from short description.
Merge remote-tracking branch 'github-astraw/pr/64'
Merge remote-tracking branch 'github-astraw/pr/62'
Merge remote-tracking branch 'github-astraw/pr/63'
Merge remote-tracking branch 'github-astraw/pr/54'

Conflicts:
	scripts/pypi-install
Merge remote-tracking branch 'github-astraw/pr/50'

Conflicts:
	stdeb/util.py