Better compiler errors

[jwhpryor]

JNI Bind fails to compile (by design) when invalid arguments are passed, or names are used. While this is helpful to avoid making mistakes, the error messages are incomprehensible.

When an invalid method is called, and the name is incorrect, something like the following should be emitted in the compiler error for faster scanning:

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• Jni Bind Failure

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Method Foo does not exist.

The following signatures are available:
Fooz ( int , int ) ;
Fooz ( float , int ) ;

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This will not be completed for Release 1.0.