libcob:
* move.c (optimized_move_display_to_edited): normalize numeric data
* move.c (cob_move): extend use of optimized_move_display_to_edited to more cases (i.e. different source and destination sign, leading sign, non-separate sign)
* move.c (optimized_move_display_to_edited): fixed additional bug reported with bug #1008: BLANK WHEN ZERO not working on signed NUMERIC-EDITED fields