Fix problems with getting parameter names in generated code. This manifests itself when, for example, generating i18n output files from messages in a UiBinder generated source file. Also, used the actual argument names in the generated output files for convenience and clarity. Patch by: jat Review by: scottb, rjrjr git-svn-id: https://google-web-toolkit.googlecode.com/svn/trunk@7378 8db76d5a-ed1c-0410-87a9-c151d255dfc7