Linux

Adding an `alloc_array` function #1137

Job	Run time
linux, all features disabled, release	3m 17s
linux, debug	5m 8s
linux, with c++, release	51s
linux, with c++, debug	42s
linux, release	5m 30s
linux, debug, ansi	5m 22s
linux, release, ansi	5m 46s
linux, release, single file library	5m 38s
linux, release, static library	7m 20s
linux, all features disabled, debug	1m 35s
linux, fuzzer build	11s
	41m 20s

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