Merge pull request #9 from atmos/1.9.3

Fix up 1.9.3
git require openssl headers; use updated url after kernel.org fiasco
git user.name/user.email are not required- fallback to local user/host
Better support for installing build depends
bootstrap instructions
no sun java on ubuntu oneiric? and another broken url
handle source packages better
make nginx build on oneiric
redis24 package
patch to compile redis 2.2 on newer gcc
redo ruby builds to use rbenv as a base
bump perftools
pygments 1.4
libreadline6 on ubuntu
copy libexec before bin to prevent explosions
git: add receive.advertiseAlternates patch

This should let us drop the excessively long ".have" lists
you get when pushing to heavily-forked repos.
Merge pull request #11 from github/master

git: add receive.advertiseAlternates config option
megacli
logstash 1.1.0
bump mri and ree builds