removed unused autofs_auto.ycp and autofs_proposal.ycp clients

(not present in Makefile.am thus not packaged into RPM,
removed in 2007, missing in SLE11-SP and openSUSE-12.3)
Y2R compatibility: updated dialogs.ycp (missing include)
removed unnecessary BuildRequires

(perl-XML-Writer and yast2-testsuite)

- 2.24.0
Merge pull request #1 from yast/cleanup

Cleanup - moving patches from YCP killer to upstream