a68: introduce a68_add_global_decl and a68_global_context Signed-off-by: Jose E. Marchesi <jemarch@gnu.org> gcc/algol68/ChangeLog * a68.h: Add prototypes for a68_add_global_decl and a68_global_context. * a68-low-ranges.cc (a68_add_global_decl): New function. (a68_global_context): Likewise.