RaspiCam:

Restructured the component creation to return status codes

Added a missing function header commment
RaspiCam: Added timelapse mode to RaspiStillYUV
Fixed up EXIF setting as sending data whilst encoder port was active
is not allowed. Now close port between captures to allow setting.
Merge pull request #55 from JamesH65/camera_dev

Component creation functions changed to return status