The previous commit resolved the debian build problem, but was building
packages with the stable version.  A development version is required in
the changelog to properly build development DEB packages.

Remove 1.8 debian/changelog entry with a date of "TBD" as this causes
the debian build process to fail.  We can add this back with the 1.8
release becomes a reality, or add it back now with a valid date in the
future.

The ansible PyPi package, and RPM both require crypto>=2.6.  This change
carries that dependency into the ansible DEB package.  Note, for
ubuntu-12.04, this dependency is only satisfied by a PPA.  Users
installing from 'ppa:ansible/ansible' will not be affected..

Updates to Makefile include:
 * add targets: deb-src, deb-src-upload, deb-upload
 * add variables to control DEB building: DEBUILD_OPTS, DPUT_OPTS, DEB_PPA, DEB_DIST, DEB_RELEASE
 * create deb files for all release values in DEB_DIST

Several updates to packaging/debian/*
 * Updated control file
 * Whitespace/formatting of changelog

Add deb-build to .gitignore

`make rpm` gives these warnings:

    warning: bogus date in %changelog: Thu Feb 28 2014 Michael DeHaan <michael.dehaan@g.c> - 1.5-0
    warning: bogus date in %changelog: Thu Jul 05 2013 Michael DeHaan <michael.dehaan@g.c> - 1.2-2
    warning: bogus date in %changelog: Thu Aug 6 2012 Michael DeHaan <michael.dehaan@g.c> - 0.7-0

    RPM build errors:
        bogus date in %changelog: Thu Feb 28 2014 Michael DeHaan <michael.dehaan@g.c> - 1.5-0
        bogus date in %changelog: Thu Jul 05 2013 Michael DeHaan <michael.dehaan@g.c> - 1.2-2
        bogus date in %changelog: Thu Aug 6 2012 Michael DeHaan <michael.dehaan@g.c> - 0.7-0

Seems that there are no man for section 3 anymore. Removed install
snippet from PKGBUILD.
Added list of PKGBUILD contributors in header.

forward compat package

ansible depends on sshpass as well.

Trim references to fireball as we want folks using accelerate or pipelining options.  Fireball is pretty well deprecated at this point, but will still be part of the release.

While we're on it, change $pkgdesc to follow its counterpart from
official repositories. Additionally don't install RELEASES.txt and
CONTRIBUTING.md; there is little use for them from the user's perspective.