Fix issues 8435, 10118.
Hack to make BigInt's typeinfo use the correct version of opCmp.
Use typeid.getHash instead of rt.util.hash.hashOf which is not
accessible from outside druntime.
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Fixes issue #9967 - ParameterIdentifierTuple broken for setters
Add LetterCase to to!
add missing constructor declarations for -version=StdDdoc
Merge pull request #1432 from dawgfoto/fixup1407

add missing constructor declarations for -version=StdDdoc
Merge pull request #1429 from Kozzi11/toWithLetterCase

Add LetterCase to to!
Merge pull request #1378 from yazd/fix9967

Fix for issue #9967 - ParameterIdentifierTuple broken for setters
Merge pull request #1402 from quickfur/bigint_hash

Fix issues 8435, 10118.