Added support for Percentage in buffer-size in sort #4328

Job	Run time
Build the fuzzers	1m 46s
Run the fuzzers (fuzz_test, true)	2m 33s
Run the fuzzers (fuzz_date, false)	2m 24s
Run the fuzzers (fuzz_expr, true)	2m 27s
Run the fuzzers (fuzz_printf, false)	1m 33s
Run the fuzzers (fuzz_echo, true)	2m 29s
Run the fuzzers (fuzz_seq, false)	1m 24s
Run the fuzzers (fuzz_sort, false)	1m 46s
Run the fuzzers (fuzz_wc, false)	1m 29s
Run the fuzzers (fuzz_cut, false)	1m 33s
Run the fuzzers (fuzz_split, false)	1m 49s
Run the fuzzers (fuzz_tr, false)	1m 29s
Run the fuzzers (fuzz_env, false)	1m 22s
Run the fuzzers (fuzz_parse_glob, true)	2m 26s
Run the fuzzers (fuzz_parse_size, true)	2m 34s
Run the fuzzers (fuzz_parse_time, true)	2m 26s
Run the fuzzers (fuzz_seq_parse_number, true)	2m 20s
	33m 50s

Provide feedback