Improved XY Calibration and I/O Test programs

Updated I/O Test to show multiple channels in yT and added an XY graph
Improved XY Calibration by automatically stepping to the next target,
better averaging data samples used during calibration, displaying all
target locations graphically, and numerous other small improvements.
Allows programmers to disable XGL and better debug the program by
setting break oints.
Added independent control of debugging variables in XYCalibrate

Added ability to control debugging of video and keyboard functions
separately.
Fixed a bug in disabling mouse handlers due to improper handling of long
directory names
- Allows ML to be installed on the C:\Documents and
Settings\users\name\Desktop
DAQ Toolbox Additions

Added some information about the DAQ toolbox installed.
Looked into what it will take to upgrade to 64 Bit DAQ
Removed the low pass filter (commented out), reverted to using the mean
of the spread around the gaze

Added a median calculation around the spread, and graphed that value.
- Will test using this instead of the mean.
- Discovered more problems on Windows XP.
- A lot of noise in my joystick. May switch to using a generic function
generator
- Will switch to a nine point calibration to compare accuracy and
precision compared to 5 points.
Added the ability to disable the mouse control, separate of the the
keyboard.
Added better messages
Added Eddie's I/O improvements