Comment # 4 on bug 991155 from Dominique Leuenberger

To visualize:

> zypper info --provides libgsl19
Provides:
  libgslcblas.so.0()(64bit)
  libgsl.so.19()(64bit)
  libgsl19 == 2.1-1.1
  libgsl19(x86-64) == 2.1-1.1