Rename mod_authn -> mod_authn_core & mod_authz -> mod_authz_core per

discussions on list.

(This just renames the files - doesn't touch the content.)

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/authz-dev@354490 13f79535-47bb-0310-9956-ffa450edef68

diff --git a/modules/aaa/mod_authn.c b/modules/aaa/mod_authn_core.c
similarity index 100%
rename from modules/aaa/mod_authn.c
rename to modules/aaa/mod_authn_core.c

diff --git a/modules/aaa/mod_authz.c b/modules/aaa/mod_authz_core.c
similarity index 100%
rename from modules/aaa/mod_authz.c
rename to modules/aaa/mod_authz_core.c