[Bug fortran/37131] inline matmul for small matrix sizes

[tkoenig at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=37131
Bug 37131 depends on bug 68009, which changed state.

Bug 68009 Summary: [7/8 Regression] prototype for gfortran_runtime_error with 
inline matmul
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68009

           What    |Removed                     |Added
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             Status|ASSIGNED                    |RESOLVED
         Resolution|---                         |FIXED