move plaintext/json from global to class scope
use utf8 only when needed
Incorporate PR 664 via ptarjan:hhvm
correct the setup.py for proper regex replacement and add logfile in daemon mode
make utf8 a keyword
run in server mode as logs should be stdout/stderr per reqs
make utf8 default and run in daemon mode
Merge branch 'hhvm_bench8feedback' of https://github.com/nareshv/FrameworkBenchmarks into PR666

Conflicts:
	hhvm/db.php
	hhvm/fortunes.php
	hhvm/json.php
	hhvm/plaintext.php
	hhvm/queries.php
	hhvm/updates.php