Add signed integer overflow checking to zlib

Migrate zlib over to Clang in order to use -ftrap to abort on signed
overflow

Change-Id: Ib2feb1dca89e18b4621b2fee0004b0f4d96d3dce
Revert "Add signed integer overflow checking to zlib"

The build is broken.

This reverts commit 4018ebf35d1ab1cd6b1340f44df0a1095cb5d10d.
zlib: buffer over-run fix  in inflate_fast_copy

buffer over-runwhen 3 bytes are left to copy

CRs-fixed: 449591
Change-Id: I61bd82d2ab0a8bd4654b0a8d75f2ba7ecfecffec
Merge tag 'android-4.4.3_r1.1' into kk-4.4