FreeBSD/ports 748ba99 (r514451)lang/gcc9-devel distinfo Makefile

Update to the 20191012 snapshot of GCC 9.2.1.

This brings four+ fixes on the Fortran side, one for the C++ front end,
one for rs6000/powerpc (and several for platforms we do not support).
DeltaFile
+3-3lang/gcc9-devel/distinfo
+1-1lang/gcc9-devel/Makefile
+4-42 files

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