https://bugs.webkit.org/show_bug.cgi?id=72337

Reviewed by Darin Adler.

Added static finalize functions to the subclasses of ExecutableBase that provide an implementation 
of clearCodeVirtual, changed all of the clearCodeVirtual methods to non-virtual clearCode method,
and had the finalize functions call the corresponding clearCode methods.

* runtime/Executable.cpp:
(JSC::ExecutableBase::clearCode):
(JSC::NativeExecutable::finalize):
(JSC::EvalExecutable::finalize):
(JSC::EvalExecutable::clearCode):
(JSC::ProgramExecutable::finalize):
(JSC::ProgramExecutable::clearCode):
(JSC::FunctionExecutable::discardCode):
(JSC::FunctionExecutable::finalize):
(JSC::FunctionExecutable::clearCode):
* runtime/Executable.h:
(JSC::ExecutableBase::finishCreation):
(JSC::NativeExecutable::create):
(JSC::EvalExecutable::create):
(JSC::ProgramExecutable::create):
(JSC::FunctionExecutable::create):


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@100493 268f45cc-cd09-0410-ab3c-d52691b4dbfc