#1 A better way to find Berkeley DB C++ bindings

The existing checks for the Berkeley DB C++ bindings
did not work on Debian (Sarge) for reasons unknown (to
be investigated later).

The attached patch is for the configure.in uses
AC_TRY_LINK to verify the existence of the C++ function
DbEnv::version() in -ldb_cxx.

[Anonymous]

A better way to find Berkeley DB C++ bindings