Correct Sindhi orthography to use Arabic script (bug #17140)

The previous version used the Devanagari script. But in both Pakistan and
India, Sindhi is generally written in Arabic. The Devanagari data could
prove to be useful, if we decide on how we should name such files (see
bug #17208 and bug #19869).

fc-lang/sd.orth

@@ -1,28 +1,58 @@
 #
 # fontconfig/fc-lang/sd.orth
 #
-# Copyright © 2008 Rahul Bhalerao
+# Copyright © 2009 Roozbeh Pournader
 #
 # Permission to use, copy, modify, distribute, and sell this software and its
 # documentation for any purpose is hereby granted without fee, provided that
 # the above copyright notice appear in all copies and that both that
 # copyright notice and this permission notice appear in supporting
-# documentation, and that the name of Keith Packard not be used in
+# documentation, and that the name of the author(s) not be used in
 # advertising or publicity pertaining to distribution of the software without
-# specific, written prior permission.  Keith Packard makes no
+# specific, written prior permission.  The author(s) make(s) no
 # representations about the suitability of this software for any purpose.  It
 # is provided "as is" without express or implied warranty.
 #
-# KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+# THE AUTHOR(S) DISCLAIM(S) ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
 # INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
-# EVENT SHALL KEITH PACKARD BE LIABLE FOR ANY SPECIAL, INDIRECT OR
+# EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY SPECIAL, INDIRECT OR
 # CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
 # DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
 # TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
 # PERFORMANCE OF THIS SOFTWARE.
 #
-# Sindhi (Devanagari script) (SD)
+# Sindhi (sd)
 #
-include hi.orth
-097b-097c	# Sindhi implosives
-097e-097f	# Sindhi implosives
+# Sindhi is mostly written in the Arabic script in both Pakistan and India.
+#
+# Sources:
+# * http://www.user.uni-hannover.de/nhtcapri/sindhi-alphabet.html
+# * http://www.omniglot.com/writing/sindhi.htm
+# * http://tdil.mit.gov.in/sindhidesignguideoct02.pdf
+#
+# Some of the Sindhi letters are not available as presentation forms in
+# Unicode, so we go with general-purpose Arabic letters.
+#
+0621-0622
+0624
+0626-0628
+062A-063A
+0641-0642
+0644-0648
+064A
+067A-067B
+067D-0680
+0683-0684
+0686-0687
+068A
+068C-068D
+068F
+0699
+06A6
+06A9-06AA
+06AF
+06B1
+06B3
+06BB
+06BE
+#06FD-06FD # signs are usually not included in orthographies