Caller graph in html documentation is missing for some BLAS routines

[angsch]

The netlib html documentation typically includes a call graph and caller graph. Some BLAS routines including axpy, copy and gemm only have the call graph, but lack the caller graph. Here is a screenshot of what is shown for gemm right now:

As you can see, the routines that call gemm are not arranged into a caller graph. For other routines such as trmm both graphs are shown