old bug: incr/decr don't respect flush_all

[Brad Fitzpatrick]

While writing a test suite and unifying some duplicated code paths, I
found that incr/decr don't respect the flush_all time:

set foo 0 0 1
1
STORED
get foo
VALUE foo 0 1
1
END
incr foo 1
2
incr foo 2
4
flush_all
OK
incr foo 1
5
incr foo 2
7
get foo
END
incr foo 1
NOT_FOUND


Somewhat surprised this has never come up.  :)  (Unless I missed it....)

- Brad