Add generic type to CommPortIdentifier.getPortIdentifiers()

[MrDOS]

Per the JCA, CommPortIdentifier.getPortIdentifiers() is declared as:

public static java.util.Enumeration getPortIdentifiers()

...which makes sense, because even JCA 3.0 predates the introduction of generics in Java 1.5. But generics were implemented in a backwards-compatible manner. There should be nothing stopping us from specifying the type of the returned enumeration:

public static java.util.Enumeration<CommPortIdentifier> getPortIdentifiers()

This would make the API considerably easier to consume at no binary compatibility cost.

[madhephaestus]

love it, great idea!