Open sketches display in Sketch menu

Consists of 3 commits all squashed up. Used Menu Listener in the end over
polling.
Added a submenu; sketch now comes to front.

Consists of 2 commits all squashed up.
Open Sketches Sub-Menu implementation complete

Current sketch is now indicated with a check box
switch to 7u60
fail on error with delete, need to fix some errors
general notes
add chaining operations and copy() to PVector (#257)
delete video library now in processing-video
Merge branch 'master' of https://github.com/processing/processing.git
removed video from the build process
increase heap size to 256m (-Xmx256) per Manindra request
Merge pull request #2551 from joelmoniz/openSketchList

Implementation of a list of open sketches in the Sketch menu
Added textSize() as related to text() in reference
Removed Books from examples
Revert "Removed Books from examples"

This reverts commit f810b9e565d170492200e155588e4d89f36f399a.
Removing Books from Examples -- second try
Merge remote-tracking branch 'upstream/master'