fix Issue 5878 - Forward reference in returning superclass from template using is() expression
Fixup test case for Issue 9680.
fix Issue 9890 - Alias This + Alias Fields
Merge pull request #1862 from AndrejMitrovic/Fixup9680

Fixup test case for Issue 9680.
Fixup test-case for Issue 9692.
Fix issue 9445 ICE(interpret.c) calling parameter in CTFE

Typo: should be checking variable has a value, not getting the value
(which will ICE if it has no value).
Merge pull request #1869 from AndrejMitrovic/Fixup9692

Fixup test-case for Issue 9692.
Merge pull request #1870 from donc/ice9445ctfe

9445 ICE(interpret.c) calling parameter in CTFE
fix Issue 9903 - Broken ddoc in std.typecons and etc.c.sqlite3
Merge pull request #1872 from 9rnsr/fix9903

[REG2.061] Issue 9903 - Broken ddoc in std.typecons and etc.c.sqlite3
Merge pull request #1867 from 9rnsr/fix9890

[REG2.061] Issue 9890 - Alias This + Alias Fields
Merge pull request #1859 from 9rnsr/fix5878

Issue 5878 - Forward reference in returning superclass from template using is() expression