https://bugs.webkit.org/show_bug.cgi?id=70157

Reviewed by Geoff Garen.
        
Added FunctionExecutable::produceCodeBlockFor() and rewired compileForCallInternal()
and compileForConstructInternal() to use this method. This required more cleanly
exposing some of CodeBlock's tiering functionality and moving the CompilationKind
enum to Executable.h, as this was the easiest way to make it available to the
declarations/definitions of CodeBlock, FunctionExecutable, and BytecodeGenerator.

* bytecode/CodeBlock.cpp:
(JSC::CodeBlock::copyDataFrom):
(JSC::CodeBlock::copyDataFromAlternative):
* bytecode/CodeBlock.h:
(JSC::CodeBlock::setAlternative):
* bytecompiler/BytecodeGenerator.h:
* runtime/Executable.cpp:
(JSC::EvalExecutable::compileInternal):
(JSC::ProgramExecutable::compileInternal):
(JSC::FunctionExecutable::produceCodeBlockFor):
(JSC::FunctionExecutable::compileForCallInternal):
(JSC::FunctionExecutable::compileForConstructInternal):
* runtime/Executable.h:
(JSC::FunctionExecutable::codeBlockFor):



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@97564 268f45cc-cd09-0410-ab3c-d52691b4dbfc