[gtksourceview] Added missing D keywords

[Paolo Borelli <pborelli src gnome org>]

commit ec2e0073bafd87cfa0135b849000c3a1db4149ab
Author: Mike Pedersen <noctune9 gmail com>
Date:   Fri Nov 22 23:15:15 2013 +0100

    Added missing D keywords
    
    https://bugzilla.gnome.org/show_bug.cgi?id=715044

 data/language-specs/d.lang |    6 ++++++
 1 files changed, 6 insertions(+), 0 deletions(-)
---
diff --git a/data/language-specs/d.lang b/data/language-specs/d.lang
index 0d61781..659ea4d 100644
--- a/data/language-specs/d.lang
+++ b/data/language-specs/d.lang
@@ -160,6 +160,12 @@
       <keyword>version</keyword>
       <keyword>while</keyword>
       <keyword>with</keyword>
+
+      <!-- added in D2 -->
+      <keyword>pure</keyword>
+      <keyword>nothrow</keyword>
+      <keyword>shared</keyword>
+      <keyword>immutable</keyword>
     </context>
 
     <context id="types" style-ref="type">