*) dbm: Split the loading of a dbm driver from the opening of a dbm file. When
an attempt to load a dbm driver fails, log clearly which driver triggered
the error (not "default"), and what the error was.
git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1898590 13f79535-47bb-0310-9956-ffa450edef68