Fix the RPM build after da6ee6ec.

rpmbuild apparently chokes with comments in the same line as BuildRequires:
  tizen-extensions-crosswalk:
    nothing provides #
    nothing provides Evas.h
    nothing provides is
    nothing provides required
    nothing provides by
    nothing provides capi-web-favorites.
Merge pull request #231 from rakuco/unbreak-spec-file

Fix the RPM build after da6ee6ec.