Update to openresolv-3.5.6

Highlights include:
 * Fixed name_servers[_append] and search_domains[_append] to suscribers
   other than libc
Updated net/openresolv to 3.5.6
+ mc-4.8.9, tea-36.0.2.
Install emacs mode into examples directory since it
a) doesn't work with current emacses and
b) breaks the eshell mode coming with emaces.

Bump PKGREVISION.

Addresses PR 48050 by Memnon Anon.
Updated shells/esh to 0.8nb4
more portability fixes, described in the patch files.