fix sformat to be have similar behavior like ycp sformat
Merge branch 'workshop_adaptation_for_conversion' of github.com:yast/yast-ruby-bindings into workshop_adaptation_for_conversion
add tolstring builtin
added toasci() builtin
added timestring() builtin
add crypt builtins
adapt to changes in y2r for references
fix typo
fix references and client call with abs value
Merge pull request #9 from lslezak/timestring

Added timestring() builtin
Merge pull request #8 from lslezak/toascii

Added toasci() builtin
Merge remote-tracking branch 'upstream/workshop_adaptation_for_conversion' into tohexstring

Conflicts:
	tests/ruby/builtins_test.rb