Document the stub status of the QUAD_PRECiSION code (#1772)
Document the stub status of the QUAD_PRECiSION code (#1772)

* Document the stub status of the QUAD_PRECiSION code inherited from GotoBLAS2

in response to #1769
xianyi/OpenBLAS,xianyi/OpenBLAS,xianyi/OpenBLAS,xianyi/OpenBLAS,xianyi/OpenBLAS,xianyi/OpenBLAS,xianyi/OpenBLAS,xianyi/OpenBLAS