TEST : fixed Makefile for corsair, fixed test_triangles_scigl
DOC : added shape3D to doc (+small fixes on test/test_triangles_scigl)
test_triangle : added MouseWheel to zoom
DOC : added test/test_triangles_scigl.cc
DOC : added shape3D/ref_frame.h
test_arrow.cc : cleaned and fixed arrow bad shape.
DOC : added test_arrow_scigl.cc
TEST : fixed rules.mk for compilation pbs