Convert constant names to upper case (no functional changes)
Convert constant names to upper case (no functional changes)

* Converted constant names to upper case, per PEP 8 convention:
   * bin_paths       -> BIN_PATHS
   * cfg_file_path   -> CFG_FILE_PATH
   * player_opts     -> PLAYER_OPTS
   * scr_sess_prefix -> SCR_SESS_PREFIX
   * disp_res_x      -> DISP_RES_X
   * disp_res_y      -> DISP_RES_Y
   * grid_sz_x       -> GRID_SZ_X
   * grid_sz_y       -> GRID_SZ_Y

willch3n/utils,willch3n/utils,willch3n/utils