dijkstra.cl: Alignment corrected. The problem was in ImageIFT's struct. Semaphores removed.
kernel2.cl: Semaphores and some commented codes removed.
watershed.c: Using the copy buffer to gpu mode.
Merge branch 'optimizing' of https://github.com/gagallo7/OpenCLStudy into optimizing

Conflicts:
	ift-demo/demo/watershed2/Makefile
	ift-demo/demo/watershed2/flower_result.ppm
	ift-demo/demo/watershed2/kernel2.cl
	ift-demo/demo/watershed2/watershed
	ift-demo/demo/watershed2/watershed.c
	ift-demo/lib/libift.a
Trying to make the initialization parallel