bad interaction between C-s and C-x )

[Dave Love]

Keyboard macros now get confused if C-s is terminated by C-x ).  To
reproduce, in the default *scratch* do:

C-s is C-x ( C-s C-s C-x ) C-x e

and get an obscure `Not defining keyboard macro' error, though the
macro actually runs.

This is error-free in 21.3 and is probably the way I most often use
keyboard macros, i.e. altering something and then searching for the
next occurrence.