masterkain (Claudio Poli)

String#[]: do not crash if called with 2 arguments where the last one (len) is negative

<rdar://problem/7381872> Object#class returns singleton classes

<rdar://problem/7382416> Inspect adds extra characters to objects with member variables

make sure we rubyfy objc-like selectors and box arguments into a Hash before calling #method_missing

added Encoding#default_external= and Encoding#default_internal= which do nothing (for now)

refreshed

- Minor update to correct the code syntax - no impact

added a note about the macruby sample

new sample showing how to edit a YAML file via a GUI. Use of cocoa sheet and alerts.

adding 2 failing tests

sync with 1.9 + improved a couple of things

make sure to sanitize method names because passing them to the added/removed/undefined callbacks

when mixing a class with a module, make sure to JIT methods that already exist in the target class

dispatch #method_added even during method registration, not compilation

Module#<=: fixed to honor included modules

disable #[], #[]= and #<< optimizations for subclasses

don't show this annoying warning by default

refreshed

added a Compile target that calls 'macruby_deploy --compile'

clean up the magic comment parsing code, which should hopefully fix the build

faster IO#gets

slightly faster hash iterations

optimized Hash#[] to not dispatch #default if it's unnecessary

added fast #[] and #[]= paths for Hash

some minor string optimizations

moved the removed_method code to the VM + fixed undef_method callbacks

now caching respond_to? for better performance

fixed a bug in the compilation of gvar assignments where potential exceptions would not properly be intercepted

revert the GC_WB change