When we animate from a use, we should not consider its matrix because the matrix of the destination group is apply to the whole <svg:use> include its matrix. Seperate scale tween into three functions to reduce its size.

# -*- indent-tabs-mode: t; tab-width: 8; c-basic-offset: 4; -*-
# vim: sw=4:ts=8:sts=4
m4datadir = $(datadir)/mb
dist_m4data_DATA = foreach.m4 mb_c_header.m4 mb_c_source.m4
dist_bin_SCRIPTS = svg2code.py