file_stat, File->stat et al now returns a Stat object

bumping revision to 7.1.6

Rev: lib/master.pike.in:1.126
Rev: lib/modules/Stdio.pmod/Terminfo.pmod:1.9
Rev: lib/modules/Stdio.pmod/module.pmod:1.83
Rev: src/modules/files/Makefile.in:1.12
Rev: src/modules/files/efuns.c:1.86
Rev: src/modules/files/file.c:1.196
Rev: src/modules/files/file.h:1.19
Rev: src/modules/files/file_functions.h:1.16
Rev: src/modules/files/stat.c:1.1
Rev: src/version.h:1.197