Set Remmina specific FreeRDP config data folder
FreeRDP save some config files, especialy, certificates and known_hosts data, under a folder, that by default is ~/.config/freerdp.
This patch force this folder, FreeRDP_ConfigPath, to a Remmina specific PATH, to avoid conflcts between Remmina and Freerdp.
Fixes #2470 (closed)
Signed-off-by: Antenore Gatta antenore@simbiosi.org