D-Programming-Language/dmd — pull request #1185 by llucax (2012-10-15 19:50:28+00:00)
Title: Add option to show deprecated errors as warnings

The new option -di treats deprecation errors as informational warnings,
just like -wi show warnings as informational messages without triggering
errors.

Tests that required -d are updated to use -di options too to ensure -d
and -di works exactly the same (except for the compiler messages). Test
that didn't really required -d to run (usually obscure bugs only
triggered with -d), are now using both -d and -di as PERMUTE_ARGS
instead of REQUIRED_ARGS, so the are more generally tested.