update unicode to version 6.3.0 from 6.2.0.  these
changes are fairly trivial.

Reference: /n/atom/patch/applied/unicode6.3.0
Date: Sun Jan 12 18:38:57 CET 2014
Signed-off-by: quanstro@quanstro.net

--- /sys/man/2/runeclass	Sun Jan 12 18:36:01 2014
+++ /sys/man/2/runeclass	Sun Jan 12 18:36:02 2014
@@ -48,6 +48,6 @@
 .br
 The Unicode Consortium.
 .IR "The Unicode Standard" ,
-Version 6.2.0, (Mountain View, CA: The Unicode Consortium, 2011. ISBN 978-1-936213-07-8)
+Version 6.3.0, (Mountain View, CA: The Unicode Consortium, 2013. ISBN 978-1-936213-08-5)
 .br
-http://www.unicode.org/versions/Unicode6.2.0
+http://www.unicode.org/versions/Unicode6.3.0
--- /sys/src/cmd/runetype/mkfile	Sun Jan 12 18:36:03 2014
+++ /sys/src/cmd/runetype/mkfile	Sun Jan 12 18:36:04 2014
@@ -98,4 +98,4 @@
 block:D:
 	hget $url/Blocks.txt>$target
 
-CLEANFILES=$HDOT block.h
+CLEANFILES=$HDOT block.h unicode
--- /sys/src/libc/port/runetype.h	Sun Jan 12 18:36:09 2014
+++ /sys/src/libc/port/runetype.h	Sun Jan 12 18:36:12 2014
@@ -5,7 +5,6 @@
 	0x0020,	0x0020,	/* space */
 	0x00a0,	0x00a0,	/* non-breaking space */
 	0x1680, 0x1680,	/* ogham space mark */
-	0x180e, 0x180e,	/* mongolian vowel separator */
 	0x2000, 0x200b,	/* en quad - zero width space */
 	0x2028, 0x2029,	/* line separator - paragraph separator */
 	0x202f, 0x202f,	/* narrow no-break space */
--- /lib/unicode	Sun Jan 12 18:36:49 2014
+++ /lib/unicode	Sun Jan 12 18:37:15 2014
@@ -1505,6 +1505,7 @@
 000619	arabic small damma
 00061a	arabic small kasra
 00061b	arabic semicolon
+00061c	arabic letter mark
 00061e	arabic triple dot punctuation mark
 00061f	arabic question mark
 000620	arabic letter kashmiri yeh
@@ -7112,6 +7113,10 @@
 002062	invisible times
 002063	invisible separator
 002064	invisible plus
+002066	left-to-right isolate
+002067	right-to-left isolate
+002068	first strong isolate
+002069	pop directional isolate
 00206a	inhibit symmetric swapping
 00206b	activate symmetric swapping
 00206c	inhibit arabic form shaping