--optimize takes disabler operands (startin with "-")
Merge pull request #256 from jsx/wasabiz/disable-optimize-alias

--optimize takes disabler operands (startin with "-")
use --optimize -X flags
add an assertion
close #258; ignore processing deleted funcdefs in jsemitter
cleanup
revert the broken fix for #258

reverted commits:
	fd9739dabea39f932197efa1b06caa274fd3c5f0
	8c77f482b4df5b385d38535f89bb457bbc8f7495
add test
remove the deleted constructor before inter-class analysis
reference to the class object should be listed in the mapping if the class has no constructor
add tests (as well as rename)
Merge branch 'kazuho/issues/258'
add failing test
was testing the wrong property for IS_DELETE
Merge branch 'kazuho/experiments/delete-constructor-wo-body'
rebuild bootstrap-compiler.js
no `delete function constructor() {}` in core
releng for v0.9.64
fix a bug (t/run/356)
Merge branch 'master' into wasabiz/experiments/lambda-lifting