We change from "mysecret" to "radsec" as per
draft-ietf-radext-radsec-12.txt section 2.3 (4).

In the error case in confserver_cb() where compileserverconfig() we
used to go to errexit and have resonf, passed as an argument through
ARG, freed.  Other parts are still using that conf.

Closes RADSECPROXY-34.

This triggers a bug in radsecproxy.  Don't use it for now.

Also, add some notes about dynamic lookup esp. wrt. freeing of resources to develdoc.txt.

Note that this is a syntax check only.  Passing this test doesn't mean
that the config file is good for running radsecproxy!

Used in 'tls defaultClient' and 'tls defaultServer' configuration blocks.

Reported by Maja Gorecka-Wolniewicz.

Found by Maja Wolniewicz.

Get rid of warnings about defining variables conditionally and unconditionally.
Don't redefine EXTRA_DIST with a spurious space in it.