zlib: Upgrade 1.2.5 -> 1.2.6

zlib: Upgrade 1.2.5 -> 1.2.6

Dont use autotools, it really not so autoconf like.
the configure script gets updated with every release of zlib
and we overwrite that. Instead use the upstream provided
configure

copyright year was changed in zlib.h which caused change in
LIC_FILE_CHECKSUM

fix.inverted.LFS.logic.patch is already applied upstream so drop it

Drop the configure.ac and Makefile.am scripts since we do not
autoreconf anymore and do not inherit autotools anymore

Bump PR for depending recipes so a rebuild it ensues so that
they dont depend on .la anymore
and add missing dependencies discovered during incremental
build

Signed-off-by: Khem Raj <raj.khem@gmail.com>