Merge 9.0. [5f739d2253] will be handled in separate commit #655

Job	Run time
build (gcc)	1m 46s
test (gcc)	4m 11s
build (gcc, CFLAGS=-DTK_NO_DEPRECATED=1)	1m 44s
test (gcc, --disable-xft)	4m 18s
build (gcc, --disable-shared)	1m 45s
test (gcc, --enable-symbols)	3m 52s
build (gcc, --disable-xft)	2m 8s
build (gcc, --disable-xss)	1m 46s
build (gcc, --enable-symbols)	1m 19s
build (clang)	1m 58s
build (clang, CFLAGS=-DTK_NO_DEPRECATED=1)	2m 11s
build (clang, --disable-shared)	1m 57s
build (clang, --disable-xft)	1m 55s
build (clang, --disable-xss)	1m 56s
build (clang, --enable-symbols)	1m 27s
	34m 13s

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