[Issue 18517] Import order is not invariant

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=18517

--- Comment #2 from Walter Bright <bugzilla at digitalmars.com> ---
Jonathan Marler's Relevant Pull Requests:

Fix module/import order invariance:

    https://github.com/dlang/dmd/pull/7900

Interpret imports the same regardless of other modules passed on the command
line:

    https://github.com/dlang/dmd/pull/7878

Add broken import order invariance tests:

    https://github.com/dlang/dmd/pull/8165

Deprecate import/module name mismatch (ALL CASES):

    https://github.com/dlang/dmd/pull/7778

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