tc/hdb: add exclusive mode, lock disabling

The :exclusive mode behaves like TokyoTyrant and keeps the
database opened in read-write mode, preventing other processes
from accessing the database.  This will be useful on Rubies
without a GVL.

:readonly no longer disables locking by default
instead "rdlock=false" must be passed in the query
parameter.  Write locks may also be disabled with
the "wrlock=false" query parameter.

0 files changed, 0 insertions, 0 deletions