Don't use built-in .sort in std.base64 unittests
Preemptive fix of other places where .sort is used
Merge pull request #2565 from quickfur/std_base64_sort

Don't use built-in .sort in std.base64 and other places
workaround inline Issue 7625

- add explicit else branches so that dmd can inline those functions
Merge pull request #2566 from MartinNowak/workaround7625

workaround inline Issue 7625