scripts/install_xtuple: abort immediately on first error, do not try to proceed
scripts/install_xtuple: fix bad comment line
scripts/install_xtuple: ignore error backing up previous log file
scripts/install_xtuple: ignore error dropping previous DB
scripts/install_xtuple: check for sudo and install other key tools using apt
scripts/install_xtuple: use add-apt-repository instead of manipulating files manually
scripts/install_xtuple: remove hardcoded reference to Ubuntu precise, detect distribution dynamically
scripts/install_xtuple: add support for wheezy using wheezy-backports
Merge pull request #1442 from dpocock/master

fix bugs in install_xtuple.sh
added apt-get update
Merge pull request #1447 from lynnaloo/master

Added apt-get update to install script
re: #1442
Merge remote-tracking branch 'xtuple/master'
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