Chrome 6+ fixes ontouchstart in win touch detection

Fixed incorrect touches facade currentTarget in delegate, after facade changes from commit 669975fc. Tested SV, DD, Gesture examples on touch/desktop.

Added API docs for context, additional args. Fixes #2529150

More minor kweight trimmage

Some minor kweight refactoring/cleanup

Added support for preventDefault config parameter for gesturemove and flick subscribers. DD should now be able to pass through it's validHandle function to preventDefault, and drop it's independent time/distance threshold implementation and use gesturemovestart's. API docs has details. Fixes #2529131

1. Normalized e.preventDefault(), e.stopPropagation() etc. between touch and mouse. No need for e._orig anymore, so removed it. 2. Fixed button filtering to default to 1 (vender left) instead of 0 (W3C left) and added e.button for touch - which defaults to filter value if provided, else 1 (so app developers don't need to change their if clauses for mouse vs. touch if they're working with e.button) See #2529131

Provide original preventable event as temp workaround for now

Removed internal preventDefault on gesturemovestart, gesturemove, geturemoveend so that app code can control when/if default behavior needs to be prevented

APIDoc tweaks. No -min files were harmed in the making of this commit point

Fixed handling of null in node.on('gesturemove', fn, null, context ...) signature

Added API Docs for Gestures. Changed flick e.velocity to incorporate direction (-ve, +ve) (and changed node-flick, scrollview listeners to match). Fixed method name refactor in paging plugin

Fixed synth event integration issue. emitFacade false not needed for DOM event pass throughs anymore

Added delegate support to move. Tested sandbox/dd/delegate.php - looks OK for both mouse and touch, apart from a little shaking when sorting. Will verify with Dav

Rolled synth event changes into Move, to get it back to steady state before i start delegate impl

Temp. hack to avoid touch interface on Chrome 5

Even though we have fireFilter, still need to check subscriber params in native listener, before preventingDefault

Updated move impl to use fireFilter

Renamed - move* to gesturemove*. node.on(move) may imply position change

Added minDistance, minTime and button param support to movestart synth event

Clean up based on review feedback from lsmith

Cleanup and added root, standAlone support

Passing through DOM e object for move events. Looks like CE won't let me change target/currentTarget.

- Normalize target/currentTarget for gestures - Add event-gestures loader meta-data (also picked up jsonp meta)

Check for node === document, added button to e (temporary, until we have full synth event arg support)

Committing early event-gesture work, just so I don't lose it while the laptop is in the shop. Still needs refinement.