Bug 76936 - [console] Eclipse Console window does not handle \b, \f, and
\r

Change ConsoleDocument to process the text String to handle \b, \f, and
\r.

Change-Id: I2071ea53fc521a0acc5e4e6ffec9aab0b1af21ea
Signed-off-by: Philippe Marschall <philippe.marschall@netcetera.ch>