Also updated the documentation formatting a bit, and added response
codes to the documentation.

 * Initial support for install on FreeBSD
 * Initial support for pre and post installation scripts
 * Add jsvc/bsd to list of aliases
 * Add openjdk{,8}/{bsd,debian,redhat} to list of aliases
 * Add oracle-java{,8}/debian to list of aliases
 * Add python2-dateutil/{bsd,debian} to list of aliases

 * New install scripts for repositories
 * Added Ubuntu 18.* install aliases for php to php-7.2

Minor fix or $ARCH detection on arm hardware
Added the $INSTALLCMD global variable
Added the option for running the script with the '-d' flag to dump variables to stdout
Minor fix to support OpenJDK in the Java version detection.
Add support for detecting SuSE 13 version.

 * Update author email address.
 * Switch Ubuntu check to a non-zero-length-string check.
 * Add support for Debian 7.x numeric strings in /etc/debian_version
 * Add support for versions in OpenSuSE and SLES.
 * Updated inline-doc for download().
 * Added --smart-override to download() for use with HTTP/HTTPS.
 * Improved systemctl/service logic in the svc() method.
 * Add check for debian version files containing only the major/minor version.