Rename StructureCheckHoistingPhase to TypeCheckHoistingPhase
https://bugs.webkit.org/show_bug.cgi?id=115938

We're going to add some more types of check hoisting soon, so let's have the right name here.

Rubber stamped by Filip Pizlo.
        
* CMakeLists.txt:
* GNUmakefile.list.am:
* JavaScriptCore.xcodeproj/project.pbxproj:
* Target.pri:
* dfg/DFGDriver.cpp:
(JSC::DFG::compile):
* dfg/DFGStructureCheckHoistingPhase.cpp: Removed.
* dfg/DFGStructureCheckHoistingPhase.h: Removed.
* dfg/DFGTypeCheckHoistingPhase.cpp: Copied from Source/JavaScriptCore/dfg/DFGStructureCheckHoistingPhase.cpp.
(JSC::DFG::TypeCheckHoistingPhase::TypeCheckHoistingPhase):
(JSC::DFG::performTypeCheckHoisting):
* dfg/DFGTypeCheckHoistingPhase.h: Copied from Source/JavaScriptCore/dfg/DFGStructureCheckHoistingPhase.h.


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@149911 268f45cc-cd09-0410-ab3c-d52691b4dbfc