Add switch -sp to split files in signal/keypress (and other WaitMethods) modes
RaspiStill example code for YUV fast paths

Update RaspiStill framework to provide access to the new EGL image
targets that provide a fastpath for mapping the individual YUV planes to
one byte per pixel GL_LUMINANCE buffers. These are still accessed as OES
textures so this is effectively a greyscale image created from a single
plane of a MMAL buffer.

Also added some example code (yuv, sobel) that demonstrates how to use
the new EGL image targets.

Also, add -gc to the command line to capture the GL frame-buffer as a TGA file.

Thanks to Tim Gover
Fix spelling error in raspistill

Fix spelling of "stablisation" => "stabilisation" in help text of raspistill
Issue #11 (jamesh65/userland) colfx options not working correctly

Fixed a bug - was setting the U value twice, and not setting V.
Bumped version numbers to suit.
Merge pull request #124 from ethanol100/splitForWaitMethods

Split files when using a waitMethod like keypress or signal
Merge pull request #127 from cybear/patch-1

Fix spelling error in raspistill
Merge pull request #130 from JamesH65/colfx_bugfix

Issue #11 (jamesh65/userland) colfx options not working correctly
Added -sn flag to set initial segment number.
Merge pull request #125 from mehow/segmentation

Added -sn flag to set initial segment number.
hello_pi: Tidy up of hello_videocube apps
mmal: Add MPJEG fourcc type
Fix "Invalid command line option" message - invalid arg index was used
Merge pull request #135 from tomekziel/master

Fix "Invalid command line option" message - invalid arg index was used
Add circular buffer mode.

This commit adds the functionality to set up a circular buffer in memory
which stores the last N seconds of video.  When the application is sent a
signal or a key is pressed the last N seconds are saved.