Enhancements and updates to the Win32 mutex subsystem.
Add the SQLITE_TESTCTRL_ISINIT file control.
Merge updates from trunk.
Enhancements and updates to the Win32 mutex subsystem.
Ensure that the correct number of columns in a UNIQUE index are checked for
uniqueness, regardless of whether or not the original table has a ROWID or
if the columns are NOT NULL, etc.  Ticket [9a6daf340df99ba93c].
Merge the fix for the CREATE UNIQUE INDEX problem into the sessions branch.