app-shells/bash: bashrc: drop custom parsing of dircolors databases #572582

app-shells/bash: bashrc: drop custom parsing of dircolors databases #572582

Starting with coreutils-8.24, the dircolors TERM entries are run through
fnmatch rather than being a plain text string.  This means our parsing
logic no longer works because we assumed fixed strings.  It isn't easy to
process a list of path globs in bash, so rework the code to always run
the dircolors tool.  We were doing this anyways in the majority of cases,
so it's not like we're adding that much overhead.  The only people who
are negatively impacted are interactive colorless terminals.

Reported-by: Bernd Feige <Bernd.Feige@gmx.net>