Commit 6fa14b37ee6976ae0a725af1edf82270c54e89d2

DRC 2015-08-13T20:06:03

Declare source buffers in TurboJPEG C API as const This reassures the caller that the buffers will not be modified and also allows read-only buffers to be passed to the functions. Partially reverts 3947a19f25fc8186d3812dbcf8e70baea36ef652.