K 10
svn:author
V 7
zeising
K 8
svn:date
V 27
2020-08-18T17:50:21.005089Z
K 7
svn:log
V 188
graphics/mesa: Fix build with -fno-common

Pull in a bunch of upstream patches to graphics/mesa to fix build with
-fno-common, which is the default after the llvm 11 import.

MFH:		2020Q3

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