[antlr-interest] "finally" blocks

[Paul J. Lucas]

	In using ANTLR with Java, it would be nice to be able to specify
	"finally" blocks, e.g.:

		someRule
		    : SOME TOKEN
		    ;
		    exception
		    catch [ MyException e ] {
		        // ...
		    }
		    finally {
		    	// ...
		    }

	Or just a "finally" block alone.

	- Paul