deleted .lwfsrc.
fixed various issues in test-html5.js.

* regexps for parameters.
* support for buggy webgl (incomplete).
* other minor errors.
* added "force:true" to update's arguments.
adjusted build/*/Makefile.
modified lwfs.rb not to delete previously converted data as much as possible.
modified converters a bit (requiring ruby 1.9.x).
merged latest lwf*.js.