Add glyph-images of HNG-KHI.

Add glyph-images of HNG-KHI.
(U+958B): Apply new conventions for glyph granularity; separate
UU+958B.
(U+958C): Apply new conventions for glyph granularity.
(U+958D): Likewise.
(U+9594): Likewise.
(U+9596): Likewise.
(U+959D): Likewise.
(U+95A1): Likewise.
(U+95A2): Likewise.
(U-0002F9EE): Add `<-denotational' for U+958B; apply new conventions
for glyph granularity.
(U+95AB): Apply new conventions for glyph granularity.
(U+95AC): Likewise.
(U+95BA): Likewise.
(U+95BC): Likewise.
(U+95C3): Likewise.
(U+95C7): Likewise.
(U+95C8): Likewise.
(U+95CC): Likewise.
(U+95CD): Likewise.
(U-00028D7B): New character; add HNG-KHI0203-0.
(U+95D1): Apply new conventions for glyph granularity.
(U+95D2): Likewise.
(U+95D9): Likewise.
(U+95DE): Likewise.
(U+95E4): Likewise.
(U+95E5): Likewise.