Adjusted BuildRequires

- Package yast2-all-packages has been removed
- All packages containing RNG files for AutoYast have been copied here
- Also packages needed for build have been added
- Also URL
Removed incorrect 'noarch' flag

- yast2-s390 is available only for S390 systems
New changes file entry and new version
Merge pull request #5 from kobliha/remove-yast2-all-packages

Replacing yast2-all-packages in BuildRequires with list of packages needed for build