debugging messages should be printed only with verbose flag

[kbys-t]

The following print disturbs the display when running the pybullet envs with tqdm in my code. If it is only for debugging, it would be better to display it only when the verbose flag is set.

bullet3/examples/pybullet/pybullet.c

Line 508 in ce26271

printf("argv[%d]=%s\n", i, argv[i]);