Shellvars: ignore network configs with brackets in their name

SSIDs containing brackets would cause aug_init failures, as the characters are
parsed in path expressions.

Fixes ticket #246
lenses.tex: fix typos, single-quote cleanup

Signed-off-by: Jan Pokorný <jpokorny@redhat.com>
* configure.ac: better detection of how to pass version script to linker

This now also works on Illumos when using GNU ld

Fixes https://fedorahosted.org/augeas/ticket/289
Krb5: fix parse error with IPA generated krb5.conf
Merge branch 'master' of https://github.com/lutter/augeas into jaas_lens
add testsuite for jaas lens