a68: remove coalesce_public_symbols shortcut

a68: remove coalesce_public_symbols shortcut

As planned, this commit removes a crude hack (the coalescing of 'pub'
symbols right after bottom-up parsing) that I introduced during the
initial implementation of modules.  The goal was to get working
separated compilation as soon as possible.  Now the rest of the
parser, and also the lowerer pass, is made to know about these 'pub'
symbols.

Signed-off-by: Jose E. Marchesi <jemarch@gnu.org>
gcc/algol68/ChangeLog

	* a68-parser-bottom-up.cc (a68_bottom_up_error_check): Do not
	check for the absence of public-symbols.
	(a68_bottom_up_coalesce_pub): Removed function.
	* a68-parser.cc (a68_parser): Do not call
	a68_bottom_up_coalesce_pub
	* a68-parser-extract.cc (a68_extract_indicants): Adapt to the
	presence of public-symbols.
	* a68-parser-modes.cc (get_mode_from_proc_variables): Likewise.
	* a68-parser-taxes.cc (tax_variable_dec): Likewise.
	(tax_proc_variable_dec): Likewise.
	(tax_op_dec): Likewise
	(tax_prio_dec): Likewise.
	* a68-low-decls.cc (a68_lower_mode_declaration): Adapt to the
	presence of public-symbols.
	(a68_lower_variable_declaration): Likewise.
	(a68_lower_identity_declaration): Likewise.
	(a68_lower_procedure_declaration): Likewise.
	(a68_lower_procedure_variable_declaration): Likewise.
	(a68_lower_brief_operator_declaration): Likewise.
	(a68_lower_operator_declaration): Likewise.

gcc/testsuite/ChangeLog

	* algol68/compile/module-2.a68: Expand test a little.