Dex dissasembler improvements

1. Disambiguate the methods references in the dissasembly, by
   printing the method declaration instead of just method name:

    Before:
	   30| invoke-virtual {v2,v3}, java.io.PrintStream.println
	After:
	   30| invoke-virtual {v2,v3}, java.io.PrintStream.println(java.lang.String):void

2. Explicitly mark aligned labels, ex:

    Label_5: <aligned>
	    .line 60
	       34| packed-switch-payload
		        1: Label_2
		        2: Label_3
		        3: Label_4

Bug: 37428394

Test: bazel test :dexter_tests

Change-Id: I7eecad066056a23d0d68383cb176ed82f52b090a