subdirs.list doesn't exist, I think we meant Make.subdirs
Add a new extension directory ext/test/kvs_bdb, dependent on Berkeley DB.
Try and find an installed version of Berkeley DB, set a new variable
BERKELEY_DB_PATH to point to it.
Rework SUBDIR handling: now that two extensions depend on the same
conditional, we can't just set the value each time.
Changes to move the Berkeley DB KVS implementation out of test/format
and loaded as a shared library.
Changes to move the Berkeley DB KVS implementation out of test/format
and loaded as a shared library.

Note we're now passing the Berkeley DB library path as a command-line
argument to s_dumpcmp.
Merge branch 'data-source' into sharedlib
5.3 is the current Berkeley DB release
Shared library version of Berkeley DB KVS.
Change Berkeley DB KVS code to always return an error instead of just
dropping dead.
Look in more places for a Berkeley DB installation: ./db in the build directory or any /usr/local/BerkeleyDB* installation.

Note that it still needs to be an *installation* of Berkeley DB: I do `make install prefix=`pwd`/LOCAL_INSTALL` in a Berkeley DB build directory, then make a symbolic link called `db` to that `LOCAL_INSTALL` directory from the WiredTiger build.
Merge pull request #503 from wiredtiger/sharedlib

Sharedlib