Merge 8.6 #4601

Job	Run time
gcc	12m 30s
msvc	10m 31s
gcc (CFLAGS=-DTCL_NO_DEPRECATED=1)	13m 2s
gcc (--disable-shared)	12m 51s
msvc (CHECKS=nodep)	10m 37s
gcc (--disable-zipfs)	12m 42s
msvc (OPTS=static)	10m 34s
gcc (--enable-symbols)	12m 50s
msvc (OPTS=noembed)	10m 22s
gcc (--enable-symbols=mem)	14m 21s
msvc (OPTS=symbols)	11m 2s
gcc (--enable-symbols=all)	15m 40s
msvc (OPTS=symbols STATS=compdbg,memdbg)	14m 46s
	2h 41m 48s

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