Fix bash 2.05b detection

[mirabilos]

GNU bash 2.05b does not do “{1..3}” expansion, which leads to mis-detecting
a fully patched bash on Debian sarge (my own packages) as vulnerable to
CVE-2014-7187 and missing CVE-2014-7187; expand those bashisms to keep
compatible and return correct values even for that version of GNU bash.

[mirabilos]

I’m removing the now-redundant repository. I merged bashcheck in its entirety, including my own patch, into my shellsnippets repository:

https://evolvis.org/plugins/scmgit/cgi-bin/gitweb.cgi?p=shellsnippets/shellsnippets.git;a=commit;h=6fe73b461eb7ddd8b0b2e1f353b70a56076c06c7