This update for nodejs4 fixes the following issues:
Fix some node-gyp permissions
New upstream maintenance 4.9.1:
remove any old manpage files in %pre from before update-alternatives were used to manage symlinks to these manpages.
Add Recommends and BuildRequire on python2 for npm. node-gyp requires this old version of python for now. This is only needed for binary modules.
even on recent codestreams there is no binutils gold on s390 only on s390x
Enable CI tests in %check target