Get mod_auth_dbm building using Apache's sdbmlib under WinNT.

  Bad conditional... need a better test to determine if we are using sdbm.

  Also - consistify linkage for expat-lite/sdmb to the same model as all
  the modules (no more nasty "conflicting linkage, use /nodefaultlib" msg.)

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git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@86257 13f79535-47bb-0310-9956-ffa450edef68