fix Issue 9689 - std.typecons.Proxy breaks with @disable this(this)
Merge pull request #1738 from 9rnsr/fix9689

[REG2.063a] Issue 9689 - std.typecons.Proxy breaks with @disable this(this)
fix Issue 9694 - A member struct that has mutable opEquals reports weird error message
Merge pull request #1741 from 9rnsr/fix9694

[REG2.063a] Issue 9694 - A member struct that has mutable opEquals reports weird error message
fix Issue 9700 - std.typecons.Proxy with invaliant and in-place operation causes Access Violation
Merge pull request #1742 from 9rnsr/fix9700

Issue 9700 - std.typecons.Proxy with invaliant and in-place operation causes Access Violation