buglist add bug 7261: wrong integral

bug 7261: wrong integral (reported by Thomas Baruchel <baruchel@gmx.com>

t1:=(16*x^14-125*x^10+150*x^6+375*x^2)/(256*x^16+480*x^12+1025*x^8+750*x^4+625)
integrate(t1,x)