Revert "jsse: Make sure we use TLSv1.2 as the default protocol."

This reverts commit c6987986c4b5f44899052ab1c93483d80997315f.
CTS includes specific test units for this, and this patch makes
us fail certification.

Fixes libcore.java.net.URLConnectionTest#testConnectViaHttps and
tests.api.javax.net.ssl.SSLSessionTest#test_getProtocol
Fix ZipFile local file entry parsing.

The file name length is given in both the central directory entry
and the local file entry, with no consistency check. ZipInputStream
and the VM's native code both use the local file entry's value but
ZipFile was using the value from the central directory.

This patch makes ZipFile behave like the other two. (Even though,
unlike the others, ZipFile actually has enough information to detect the
inconsistency and reject the file.)

Bug: https://code.google.com/p/android/issues/detail?id=57851
Bug: 9950697
Change-Id: I1d58ac523ad2024baff1644d7bf822dae412495d
(cherry picked from commit 257d72c1b3a69e0af0abe44801b53966dbf7d214)
libcore/luni: Use -fno-strict-aliasing for now

This will be reverted once we have a proper fix.

Change-Id: I82e6c5e7a83eae5ba6292df32e7d5c83479d9764