Continue the cleanup

CMakeLists.txt

include/libhqr.h

include/libhqr_internal.h

src/check.c

src/gensvg.c

src/hqr.c

src/low_adaptiv.c

src/low_greedy1p.c

src/svd.c

src/systolic.c

src/treedraw.c

testings/CMakeLists.txt

testings/draw_hqr.c

testings/draw_systolic.c

testings/testing_hqr.c

testings/testing_systolic.c

testings/testing_tileinit.c