Update NotoNaskhArabic for Kashimir digits

The previous fix (3beadb5d2b83) was incomplete. It copied
LangSys entry for 'URD ' in GSUB  to 'KSH ', but the entries were not
sorted leading 'KSH ' not to picked up by HarfBuzz.

This CL sorts LangSys entries in GSUB. It also fixes the hinted version
of Noto Sans Naskh Arabic (UI) fonts.

Tested at http://jungshik.github.io/noto/arabic/digits.html .
Extended Arabic digits 4,6 and 7 in Kashimir should match those in
Urdu and be different from those in Arabic/Persian.

Extended Arabic digits  6 and 7 in Sindhi should match those in
Urdu and be different from those in Arabic/Persian.

Fixes #975
diff --git a/hinted/NotoNaskhArabic-Bold.ttf b/hinted/NotoNaskhArabic-Bold.ttf
index 649ea05..98f8559 100644
--- a/hinted/NotoNaskhArabic-Bold.ttf
+++ b/hinted/NotoNaskhArabic-Bold.ttf
Binary files differ
diff --git a/hinted/NotoNaskhArabic-Regular.ttf b/hinted/NotoNaskhArabic-Regular.ttf
index ee6cdaa..7ab4ab8 100644
--- a/hinted/NotoNaskhArabic-Regular.ttf
+++ b/hinted/NotoNaskhArabic-Regular.ttf
Binary files differ
diff --git a/hinted/NotoNaskhArabicUI-Bold.ttf b/hinted/NotoNaskhArabicUI-Bold.ttf
index 6626e23..448d4af 100644
--- a/hinted/NotoNaskhArabicUI-Bold.ttf
+++ b/hinted/NotoNaskhArabicUI-Bold.ttf
Binary files differ
diff --git a/hinted/NotoNaskhArabicUI-Regular.ttf b/hinted/NotoNaskhArabicUI-Regular.ttf
index 67713c6..f80b1f2 100644
--- a/hinted/NotoNaskhArabicUI-Regular.ttf
+++ b/hinted/NotoNaskhArabicUI-Regular.ttf
Binary files differ
diff --git a/unhinted/NotoNaskhArabic-Bold.ttf b/unhinted/NotoNaskhArabic-Bold.ttf
index c546235..74ed726 100644
--- a/unhinted/NotoNaskhArabic-Bold.ttf
+++ b/unhinted/NotoNaskhArabic-Bold.ttf
Binary files differ
diff --git a/unhinted/NotoNaskhArabic-Regular.ttf b/unhinted/NotoNaskhArabic-Regular.ttf
index fd0e928..d4e3424 100644
--- a/unhinted/NotoNaskhArabic-Regular.ttf
+++ b/unhinted/NotoNaskhArabic-Regular.ttf
Binary files differ
diff --git a/unhinted/NotoNaskhArabicUI-Bold.ttf b/unhinted/NotoNaskhArabicUI-Bold.ttf
index e71d639..eef7d80 100644
--- a/unhinted/NotoNaskhArabicUI-Bold.ttf
+++ b/unhinted/NotoNaskhArabicUI-Bold.ttf
Binary files differ
diff --git a/unhinted/NotoNaskhArabicUI-Regular.ttf b/unhinted/NotoNaskhArabicUI-Regular.ttf
index 61f19f0..2503c2e 100644
--- a/unhinted/NotoNaskhArabicUI-Regular.ttf
+++ b/unhinted/NotoNaskhArabicUI-Regular.ttf
Binary files differ