This commit reverts part of f73f8ee8 which introduced an issue when
resizing a subcomponent with an attached OpenGLContext.

More details of the issue can be seen at
https://github.com/juce-framework/JUCE/issues/914.

Previously, we were always adding a #version 150 directive to shaders
when the GLSL version was higher than 1.2, which could cause compilation
to fail on platforms with GLSL versions between 1.2 and 1.5.

Some plugins (Izotope Relay, some older DPF plugins) use NSTrackingAreas
to handle mouse events, but unprocessed events seemingly get passed up
to outer views. Processing these events was causing unexpected
behaviour. For example, if the cursor entered a plugin view while
dragging a JUCE window border, a mouseEnter event was be generated,
interrupting the drag.

We now check whether mouse events were generated by an NSTrackingArea
which does not belong to the JUCE view, and ignore the event in this
case.

macOS Accessibility:  Fixed crash due to availability of NSAccessibilityLayoutChangedNotification on < 10.9

Accessibility:  Fall back to RowComponent AccessibilityHandler if no custom cell component handler has been set in TableListBox

Accessibility:  Disable accessibility for TooltipWindows to prevent them from interfering with focus

Check BailOutChecker before sending accessibility moved/resized event in Component::sendMovedResizedMessages()

See BREAKING-CHANGES.txt for more details.

When AudioDeviceStop() is called from a thread other than the IO thread there are no guarantees about the IOProc being called before the thread actually terminates. Moving this call to the audioCallback() method ensures that the device will be stopped immediately and we can remove a check that was taking a few seconds to close devices.

BufferingAudioReader:  Partially revert b3bdfdb3 to snap chunk start position to multiples of samplesPerBlock to fix stuttering MP3 playback on Windows

This build mode does not include support for juceaide or the
juce_add_* suite of helper functions.