On OS/390, the compiler/linker front-end doesn't handle

"-L/path/to/lib after "-o target".  After looking into build failures,
it turned out that we specify EXTRA_LDFLAGS twice (once before "-o
target" and once after "-o target") for httpd and for the support
utilities.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@95484 13f79535-47bb-0310-9956-ffa450edef68