Undo the accidental config.h changes in the pcre 10.40 update.

Most importantly, the __attribute__((__uninitialized__)) #define, which
is important for performance.

Found post-submit by a 0.5s boot time regression. (There are lots of
regular expressions used in the SELinux stuff.)

Bug: http://b/229665357
Test: treehugger
Change-Id: Ie4760c3e959110bdad361aceff438d1f2bb8e5bb
(cherry picked from commit 699503cf925a8aa74d7521798629a392af5e7c7a)
Merged-In: Ie4760c3e959110bdad361aceff438d1f2bb8e5bb
1 file changed