Revert "Fix: change XBMC temp folder path to a non-root accessible folder"

This reverts commit fd669164103c80d346af5bdf16759f7bf2f74ae2.
[droid] proper fix for xbmc.log location

As changing the location of XBMC_PATH breaks SMB on Android, this patch
keeps temp in its original location, but setting the location of
xbmc.log to XBMC_HOME/.xbmc/logs/xbmc.log which is easily accessible
with no root access required.