Remove some dead files
Merge pull request #3109 from yebblies/toctype2

[refactor] We don't need a result variable as t->ctype caches the value
Remove Expression::dump and replace usages with Expression::print
Rename toString to toStringExp to avoid conflict with D's toString
Merge pull request #3093 from jpf91/arm-1

ARM test suite fixes
Merge pull request #3115 from yebblies/toStringExp

[DDMD] Rename toString to toStringExp to avoid conflict with D's toString
Merge pull request #3114 from yebblies/dump

[cleanup] Remove Expression::dump and replace usages with Expression::print
Merge pull request #3113 from yebblies/cleanup

[cleanup] Remove some dead files
And visitor for Initializer and Expression
Move inlineCost and inlineCost3 to a visitor class
Merge pull request #3110 from yebblies/inlinecost

[refactor] Move inlineCost and inlineCost3 to a visitor class
Refactor opId, opId_r, and isCommutative into free functions
Re-implement Statement::apply in terms of Visitor
Cast visitor to void*
Remove components.push from CppMangleVisitor::substitute
Replace CppMangleVisitor::exist with CppMangleVisitor::substitute
Return early if substitute found, remove nesting level.
Merge pull request #3119 from yebblies/castvoid

[DDMD] Cast visitor to void*
Merge pull request #3107 from 9rnsr/fix11931

[REG2.065a] Issue 11931 - Linkers "Symbol Undefined" again with dmd HEAD when -g specified
[cleanup] fix indent style