Video Contact Sheet *NIX

This release actually handles --ffmpeg and --mplayer. It has correct parsing of -U. Switched to a minimum of bash 3.1. Avoids re-capturing the same frame twice;
Uses getent instead of /etc/passwd when available. It will not use mplayer's length as a ceiling for timecode removal.

A bugfix for temporary files not being removed. Identification of WebM videos. New configuration options.

This release adds a workaround for cases in which GAWK uses a comma as a decimal separator. Any OS with GAWK 3.1.3 to 3.1.5 was affected (where the environment language uses commas). Users should not try to go on in DVD mode with unreadable ISOs.

Profiles were added. On-demand loading of custom configuration files was added. Heading, footer, and title are based on actual font size. Configuration generation can be done from the command-line. Relative end-offset was added. More reasonable command-line arguments to capture from DVD were added. Configuration syntax enhancements were made, and more sensible names are used for settings.

Some Real Audio codec names were added (v4, v5, and v6). A fallback was added for the default font on systems that don't register fonts with ImageMagick. Extra temporary directories are now cleaned up correctly, and a fix was made for non-GNU implementations of awk (e.g. mawk).