Log Message:
Update to 1.6.12

Some key changes:
        * configure.in: changed "source" to "." as the \ 
source command is a
        bashism, changed a couple of double equal signs to single ones,
        moved libol to the statically linked libs as AIX links to .a files
        dynamically unless static linking is explicitly requested
        * src/filters.c (do_filter_netmask): fixed negation for the
        netmask() filter
        * src/macros.c: added LEVEL_NUM and FACILITY_NUM macros