Updated changelog, release notes and about.cfg

RELEASE_NOTES

@@ -17,7 +17,13 @@ CHANGES
 [section="Dependencies"]
 Wesnoth now requires boost 1.36 to have unordered map  
 [/section]
+[section="WML Validation"]
+A validation engine was created during Google Summer of Code 2011. Validation is done via schema. Also, a schema generating tool was created. Schema is built from schema markup inside C++ sources. 
 
+Extra info on [url=http://wiki.wesnoth.org/Category:Validation] Validation Wikipages [/url]
+
+Enabled validation of GUI WML.
+[/section]
 
 ==========
 KNOWN BUGS

changelog

@@ -130,6 +130,8 @@ Version 1.9.8+svn:
    * Added wml tag [store_items]
    * [harm_unit] now supports an harmer unit and experience calculation.
    * Added support for 24 hour ToD.
+   * Added WML validation system based on schema validation.
+   * Enabled validation for GUI WML. 
  * Miscellaneous and bug fixes:
    * Teach wmllint to fix deprecated implicit side=1 in [store_gold], [gold]
      [remove_shroud], [place_shroud], [modify_side], [modify_ai] actions

data/core/about.cfg

@@ -209,6 +209,11 @@
     [entry]
         name = "Steven Oxley (xonev)"
     [/entry]
+    [entry]
+        name = "Sytyi Nick (Sytyi)"
+        comment = "WML validation"
+        email = "nsytyi_AT_gmail.com"
+    [/entry]
     [entry]
         name = "Thomas Baumhauer (Baufo)"
     [/entry]