moving lib
renaming lib to support
moving boot and init to support
moving amber.js, renaming to amber4browser.js
moving parser* out of js into support
showdown in its own directory in support

It was only one not in core amber platform support
that was not in dedicated subdir.
tweaking amberc to work with boot, init & parser in support/
Test for method inheritance over wrapped subclasses
Fixes #546
Uncommenting other method inheritance tests.
Fixes #544
DRY propagateMethodChange
st.initClass call moved to st.removeMethod
initClass refactoring, no need for installSuperclass
Refactoring inheritedMethods to be copySuperclass-local.
boot.js: brikz introduced
boot.js: selector conversion extracted
boot.js: Organizers extracted into brik
Moving globals assignment down
boot.js: DNU and indirect send/MNU extracted into brik