(corrected) Add 18 pixel strike with japanese fonts to system.sdf Widths corrected and double checked for both strikes

[Aric Stewart]

I added a number of the black boxes to the 18 pixel strike  (the range 
before 161)  and fontforge seemed unhappy if i did not add something to 
the 16 pixel one. (maybe it was my misinterperting fontforge) but so i 
added similar black boxes to what where already there.

-aric

Huw Davies wrote:
> Aric Stewart wrote:
>> ---
>>  fonts/system.sfd | 1587 
>> +++++++++++++++++++++++++++++++++++++++++++++---------
>>  1 files changed, 1341 insertions(+), 246 deletions(-)
> 
> You seem to have changed a couple of glyphs in the 16 pixel strike too. 
>   Was that on purpose (and if so shouldn't it be a separate patch?).
> 
> Huw.
> 
> 
>