By forward-declaring zstream, we don't need to re-export zlib headers.
Bug: 37342627
Test: build
Test: BOARD_VNDK_VERSION=current m -j dumpstate (or any other module
using libziparchive)
Change-Id: Ia69e5d459c79878d491cfe4ca21a7cc8fed4a5d8
libziparchive headers are moved from the global include directory
(/system/core/include) to the local directory inside libziparchive.
Note: /system/core/include/ziparchive still exists as a symlink to
libarchive/include/ziparchive. This will be removed when there is no
header-only dependency to libziparchive.
Bug: 37342627
Test: build
Change-Id: I3631ffc2df7be8a064d64a625d10436090c3bb0f