* No tests were changed and still compile, so the API is unchanged
* ProviderName is only checked ate crypto helper. If null, then the previous code still stands. Otherwise it is used when getting an instance of java.security.Signature
* Hope you find this work useful

…ava.security.Provider instance as it provides more flexibility.

* The overloads that take the provider name check if it is loaded into Security and call the overload with the provider instance from Security. If it has not been added, they throw a NoSuchProviderException;
* Old methods without provider, call the new ones with provider as null;
* The methods that take a provider check if null has been passed in. If null, they call the getInstance only with the algorithm as parameter, which will use the lowest ranked provider in Security. This was the default behaviour.

This reverts commit 665752e.

This reverts commit 42818c4.

This reverts commit 2cdcf64.

…ixed tests.