HPCC-29917 Refactor compressToBuffer to support different compression methods #9565

Job	Run time
check-skip	21s
Build platform and regress setup	56m 40s
eclwatch-ui-tests	3m 10s
unittests	3m 46s
regression-jobs (hthor, [a-d]*.ecl)	7m 39s
regression-jobs (hthor, [e-h]*.ecl)	4m 10s
regression-jobs (hthor, [i-l]*.ecl)	7m 57s
regression-jobs (hthor, [m-q]*.ecl)	5m 40s
regression-jobs (hthor, [r-u]*.ecl, teststdlibrary.ecl)	11m 41s
regression-jobs (hthor, [v-z]*.ecl)	4m 49s
regression-jobs (thor, [a-d]*.ecl)	9m 46s
regression-jobs (thor, [e-h]*.ecl)	9m 34s
regression-jobs (thor, [i-l]*.ecl)	7m 33s
regression-jobs (thor, [m-q]*.ecl)	5m 54s
regression-jobs (thor, [r-u]*.ecl, teststdlibrary.ecl)	7m 51s
regression-jobs (thor, [v-z]*.ecl)	5m 41s
regression-jobs (roxie, [a-d]*.ecl)	9m 23s
regression-jobs (roxie, [e-h]*.ecl)	4m 11s
regression-jobs (roxie, [i-l]*.ecl)	10m 47s
regression-jobs (roxie, [m-q]*.ecl)	5m 1s
regression-jobs (roxie, [r-u]*.ecl, teststdlibrary.ecl)	11m 57s
regression-jobs (roxie, [v-z]*.ecl)	6m 3s
regression-jobs (hthor, teststdlibrary.ecl)	5m 16s
regression-jobs (thor, teststdlibrary.ecl)	5m 8s
regression-jobs (roxie, teststdlibrary.ecl)	5m 1s
	3h 34m 59s

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