Linux

(#362) Added stumpless_param_to_string benchmark #835

Job	Run time
linux, debug, ansi	15m 6s
linux, debug	3m 58s
linux, release	5m 16s
linux, release, static library	6m 48s
linux, with c++, debug	54s
linux, all features disabled, release	3m 17s
linux, all features disabled, debug	1m 39s
linux, with c++, release	51s
linux, fuzzer build	10s
linux, release, ansi	5m 18s
linux, release, single file library	5m 17s
	48m 34s

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