Backport part of [29ba539501]: many PIXEL options don't keep their co… #434

Job	Run time
build (gcc)	1m 41s
test (gcc)	3m 48s
build (gcc, CFLAGS=-DTK_NO_DEPRECATED=1)	1m 37s
test (gcc, --disable-xft)	4m 12s
build (gcc, --disable-xft)	1m 41s
test (gcc, --enable-symbols)	3m 21s
build (gcc, --disable-xss)	1m 43s
build (gcc, --enable-symbols)	1m 15s
build (clang)	1m 51s
build (clang, CFLAGS=-DTK_NO_DEPRECATED=1)	1m 54s
build (clang, --disable-xft)	1m 56s
build (clang, --disable-xss)	1m 52s
build (clang, --enable-symbols)	1m 28s
	28m 19s

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