Memory mapping the central directory of specific APKs caused memory
mappings to build up over time because they were never unmapped
correctly. This is because MappedFile is not calling munmap with the
size of the data after aligning the mmap offset to a page boundary.
Bug: 133463863
Test: install APKs and verify that the entire mapped CD is unmaped
Test: ran aapt2 as daemon and confirmed that mapped CD is unmapped
Change-Id: Icb6cfebe0e8d67160fee34c5e6423d0f05de526b
Bug: http://b/119818070 "app crashes when reading asset of zero length"
Add support for zero-length mappings for the Windows code path as well.
Test: ran libbase_test on Windows under wine.
Change-Id: Iccb65fa800c636444100c9369f41e36d24a53a99
This allows us to remove libziparchive's dependency on libutils.
Bug: http://b/79112958
Test: ran libbase and libziparchive tests, ran fastboot manually
Change-Id: I95c651976dad222863e5b8c37d4514b778f5dce7
Ryan Mitchell