Remove libcore's dependency on bouncycastle

external/bouncycastle
- Change to be the primary build for bouncycastle sources (as opposed to part of libcore)
- Moved OpenSSLMessageDigest from libcore to OpenSSLDigest
  It uses NativeCrypto API from core, but implements a bouncycastle specific interface
- restored registration of bouncycastle MessageDigests for SHA-1, SHA-256, MD5
  OpenSSLProvider versions take precedence, but explicit provider of "BC" allows choice
- enabled native versions of SHA-384 and SHA-512
- pruned MD4 implementation

frameworks/base
- frameworks and CoreTests modules now depend on bouncycastle
- update preloades classes for NativeBN package change
- moved CryptoTest to libcore

libcore
- core now builds without bouncycastle sources
- core-tests, core-tests-support, core-tests-supportlib now depend on bouncycastle
- removed libcore/openssl directory, moving NativeBN to java/math
- minor cleanup of Provider, Security, Services style while working on ProviderTest
- added new OpenSSLProvider registered as first provider to have
  priority over the others to ensure our native implementations are used
- moved BouncyCastle to have priority as a provider over Harmony
- JarVerifier and JarUtils now implicitly use OpenSSLMessageDigest
- Cleanedup OpenSSLSignature, implementation needs to be finished to move to OpenSSLProvider
- To avoid using PEMWriter from BouncyCastle, NativeCrypto now takes binary encoded certs and keys
  This is more efficient as well avoiding the base64 decode/encode of the binary data
- removed SHA-224 to match the RI

packages/apps/CertInstaller
- CertificateInstaller module now depends on bouncycastle
  this is the only app to depend on bouncycastle

system/core
- updated BOOTCLASSPATH

Change-Id: I6205366b12baec4331b4a76e2c85d8324bf64b2c
26 files changed