Gfx mainline merge multimon #1750

Job	Run time
cppcheck	17m 48s
min features with gcc	2m 23s
code formatting check	43s
min features with g++	1m 55s
min features with clang	2m 35s
max features with gcc	3m 11s
max features with g++	2m 51s
max features with clang	3m 46s
max features with gcc and DEBUG	2m 40s
max features with gcc for 32-bit arch (legacy OS)	1m 39s
max features with g++ for 32-bit arch (legacy OS)	1m 53s
max features with clang for 32-bit arch (legacy OS)	1m 59s
	43m 23s

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