Allow configure to detect BDB on Debian based distros.
Allow configure to detect BDB on Debian based distros.

Debian modified their apu-config script to not return the BDB
library unless --dbm-libs flag is passed.  Their change is wrong
but it is in the wild so we ought to deal with it.  Reference to the
bug Debian made their change in reaction to:
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=622081

* build/ac-macros/berkeley-db.m4
  (SVN_LIB_BERKELEY_DB_TRY): Add --dbm-libs to our detection of SVN_DB_LIBS 


git-svn-id: f8a4e5e023278da1e04e203c7fe051e3c4285d88@1390633 13f79535-47bb-0310-9956-ffa450edef68

YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion