scl/scl.conf: use a wildcard include instead of referencing files one-by-one

This makes it easier to work with installations that selectively installs
various SCL snippets, and also makes the file less redundant.

Signed-off-by: Balazs Scheidler <balazs.scheidler@balabit.com>
scl/solaris/plugin.conf: add extract-solaris-msgid() as a parser

This parser automatically extracts (parses & removes) the msgid portion
of Solaris messages.

Signed-off-by: Balazs Scheidler <balazs.scheidler@balabit.com>
system(): automatically add extract-solaris-msgid() as a parser on Solaris

This patch automatically removes the Solaris msgid and places the parsed
information into dedicated name-value pairs.

Signed-off-by: Balazs Scheidler <balazs.scheidler@balabit.com>