Update fonts.conf for legacy Korean fonts from Windows

. Large size of gulim.ttc and batang.ttc use hinting.
. Configuration for Tahoma is removed.
. Configuration for Malgun Gothic and Meiryo is removed.
. Configuration for the other names of Malgun Gothic and Meiryo is added.

Signed-off-by: Kwanhong Lee <kwanhong.lee@gmail.com>