Add path for PhysX default installation on 64-bit Windows systems.
Don't build tools for which the script won't prepare the system.

Our current simple instructions do not include any mention of, nor does the current devlibs.zip contain, Qt5 (required for building Tools) or PyGTK (required to build resource.dat).  This removes those projects by default for people using this script.
Check if CMake is accessible before trying to invoke it.

The default option in CMake's installer is to not install itself into the path.  Our directions on http://h-uru.github.io/Plasma/ remind the user to select the correct option, but they may overlook this, and be faced with an error running this script.  Adding a specific message here during this case will help guide them to self-fixing the problem.
Add stub plMoviePlayer.

Provides a working replacement for plBinkPlayer so that its removal
won't leave videos 'playing' indefinitely waiting for unhandled
messages.
Removes remaining usage of Bink in main engine.

- Removes Bink headers.
- Remove usage of Bink movie layers in pfJournalBook (replacing it
  with plLayerAVI in the interim).
- Removes Bink cmake.

Conflicts:
	CMakeLists.txt
	Sources/Plasma/Apps/plClient/plClient.cpp
	Sources/Plasma/PubUtilLib/plPipeline/plBinkPlayer.h
Removes remaining usage of Bink in Max plugin.

- Removes Bink headers.
- Removes Bink Layer processing.
plgAudioSys doesn't need to take hsWindowHndl.
Merge pull request #456 from dpogue/audiosys

Remove unused hsWindowHndl from plAudioSystem.
Merge pull request #453 from Deledrius/ezbuild

Simplify automated build process.
Merge pull request #407 from Deledrius/bink_removal_again

Bink Removal
Move AniGraph classes from plAvatar -> plAnimation.
Merge pull request #457 from dpogue/plAnimation

Move AniGraph classes from plAvatar -> plAnimation.