[Rd] Console in RGui does not do CR on \r (PR#4705)

[david.lenn at rtsson.com]

Full_Name: David Lennartsson
Version: 1.7.1, 1.8.0
OS: Windows XP
Submission from: (NULL) (62.119.45.80)



A very minor bug, but here it comes. On doing something as simple as cat("1st
test string\r2nd\n") the console in RGui on Windows do not perform a CR on '\r'.
This is very annoying if you for example want to have a simple progress meter
when running a batch job. It works fine in Rterm. 

The same goes for using Rprintf() in a compiled function. Rterm honours '\r' but
not Rgui.