Add support for ScriptCompiler::kProduceFullCodeCache

[pinepain]

Name	Value
Since v8 version	6.3.215
Commit hash	v8/v8@7f9de3d
Chromium issue	https://bugs.chromium.org/p/chromium/issues/detail?id=768705

[snapshot] add kProduceExhaustiveCodeCache option.

• Add kProduceExhaustiveCodeCache to v8::ScriptCompiler::CompileOptions
  to request eager compilation to add as much as possible to the code
  cache for the script.
• Repurpose ParseInfo::kLazy flag.
• Remove ParseInfo::kDebug flag.
• Remove --serialize-toplevel as it has become obsolete.

FTR, in fact it is kProduceFullCodeCache, not kProduceExhaustiveCodeCache as stated in commit message, see CR issue for details.