Fixes a couple build issues.
Fixes Stylecop issues.
Adds streaming encryption/decryption for WinRT when using CBC block mode ciphers.
Merges the PCLCrypto.Abstractions.dll into each PCLCrypto.dll.

The abstractions dll was just an extra DLL. It was modeled after PCLStorage for which it might be warranted, but probably not here.
Fixes a few failing unit tests on Android.
Add a decryption streaming test, and fix a few relevant Android tests.
Fixes 0 block size returned from Android streaming cipher mode.

This was causing a DivideByZeroException in the CryptoStream.
Fixes one more Android test.
Fixes NoPadding support in Android.
Opts out of Android support of AES/CCM because it causes issues.
Fixes the rest of the Android test failures.
Update to PCLTesting 0.1.2-Beta1.
Fixes failing unit tests on iOS.
Updates to PCLTesting-Beta2 for better responsiveness on iOS.
Merge master into AbstractionsMerge.
Updates to PCLTesting Beta3.
Fix stylecop warnings.
CAPI key formatting no longer requires RSACryptoServiceProvider.
Add RSAParameters import/export.
Removes -beta tag.