[Rachana] Add new glyph for ങ്ഗ
Savannah bug: http://savannah.nongnu.org/bugs/?41647

Signed-off-by: Rajeesh K Nambiar <rajeeshknambiar@gmail.com>
[Meera]Add new glyph for ങ്ഗ
    Savannah bug: http://savannah.nongnu.org/bugs/?41647

Signed-off-by: Rajeesh K Nambiar <rajeeshknambiar@gmail.com>