add release(Bool) option to process_wait/3

[Skgland]

This changes the behavior of process_wait/2 and process_wait/3.

The default for release(Bool) is release(true) matching sictus, but the old behavior was that of release(false).

The added tests run into #3300 due to the asserta at Line 184 of the toplevel

scryer-prolog/src/toplevel.pl

Lines 179 to 189 in 8dffd72

	( catch(user:Goal,
	Exception,
	( write_term(Goal, [variable_names(VNs),double_quotes(DQ)]),
	write(' causes: '),
	write_term(Exception, [double_quotes(DQ)]), nl,
	asserta(g_caused_exception(Goal, Exception))
	)
	) -> true
	; write('% Warning: initialization failed for: '),
	write_term(Goal, [variable_names(VNs),double_quotes(DQ)]), nl
	),

cc #3308