[Issue 18883] New: Revert workarounds expediting conversion of backend to D

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=18883

          Issue ID: 18883
           Summary: Revert workarounds expediting conversion of backend to
                    D
           Product: D
           Version: D2
          Hardware: All
                OS: All
            Status: NEW
          Severity: normal
          Priority: P1
         Component: dmd
          Assignee: nobody at puremagic.com
          Reporter: slavo5150 at yahoo.com

At the time the following PRs were created, the host compiler 2.068.2 (I
believe).  It had mangling issues that prevented conversion of the DMD backend
to D.  Therefore, Walter, insisted on a number of workarounds to expedite
conversion of the backed to D without having to wait for an updated host
compiler.  These workarounds should eventually be reverted (at least those that
still remain after the conversion).

https://github.com/dlang/dmd/pull/7416
-- See also https://github.com/dlang/dmd/pull/7505

https://github.com/dlang/dmd/pull/7523

https://github.com/dlang/dmd/pull/8249

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