Artifact e7475c15b65782cef6903db56c385719aab7908f:


On mips-sgi-irix6.2 with "cc -64", avcall does not handle correctly
structure return values which consist of 1 or 2 floats or doubles.
(The return values are found in $f0 and $f2, but avcall expects them
in $2 and $3.)