ttfonts.py: allow for _rl_accel._instanceStringWidthTTF
ttfonts.py: allow for _rl_accel._instanceStringWidthTTF

makinacorpus/reportlab-ecomobile,makinacorpus/reportlab-ecomobile,makinacorpus/reportlab-ecomobile,makinacorpus/reportlab-ecomobile,makinacorpus/reportlab-ecomobile