Merge 8.6 #365

Job	Run time
build (gcc)	1m 36s
test (gcc)	3m 46s
build (gcc, CFLAGS=-DTK_NO_DEPRECATED=1)	1m 39s
test (gcc, --disable-xft)	3m 47s
build (gcc, --disable-xft)	1m 41s
build (gcc, --disable-xss)	1m 43s
test (gcc, --enable-symbols)	3m 26s
build (gcc, --enable-symbols)	1m 15s
build (clang)	1m 48s
build (clang, CFLAGS=-DTK_NO_DEPRECATED=1)	1m 59s
build (clang, --disable-xft)	1m 46s
build (clang, --disable-xss)	1m 49s
build (clang, --enable-symbols)	1m 22s
	27m 37s

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