lots of changes

Rev: src/ChangeLog:1.136
Rev: src/language.yacc:1.60
Rev: src/las.c:1.52
Rev: src/operators.c:1.26
Rev: src/peep.in:1.11
Rev: src/pike_types.c:1.33
Rev: src/program.c:1.63
Rev: src/program.h:1.32
Rev: src/signal_handler.c:1.32
Rev: src/testsuite.in:1.74
Rev: src/version.c:1.28