Add support for TLS_FALLBACK_SCSV

Backport of commits:

external/conscrypt: 8d7e23e117da591a8d48e6bcda9ed6f58ff1a375
libcore: e6a6e935e98f426c7000b2bf4086f87101f4441c
libcore: 957ec8b09833e1c2f2c21380e53c13c9962e6b3e

Plus additional changes to:
luni/src/main/java/libcore/net/http/HttpConnection.java
luni/src/main/java/org/apache/harmony/xnet/provider/jsse/OpenSSLServerSocketImpl.java
luni/src/main/java/org/apache/harmony/xnet/provider/jsse/OpenSSLSocketImpl.java
luni/src/test/java/libcore/java/net/URLConnectionTest.java
luni/src/test/java/org/apache/harmony/xnet/provider/jsse/CipherSuiteTest.java
support/src/test/java/libcore/java/security/StandardNames.java

to account for JellyBean differences.

Bug: 17750026
Change-Id: I7b60b1260fa0b275631ce9987168c7b5fc7ca138
9 files changed