Update two address, add two new ones.

So far for the big "port committers hall of shame"

en_US.ISO8859-1/articles/contributors/contrib.additional.sgml

@@ -1775,6 +1775,11 @@
 	<email>unknown</email></para>
     </listitem>
 
+    <listitem>
+      <para>David G. Holm
+	<email>harbour@netfang.net</email></para>
+    </listitem>
+
     <listitem>
       <para>David Gilbert
 	<email>dave@daveg.ca</email></para>
@@ -2062,7 +2067,7 @@
 
     <listitem>
       <para>Don Croyle
-	<email>croyle@gelemna.ft-wayne.in.us</email></para>
+	<email>croyle@gelemna.org</email></para>
     </listitem>
 
     <listitem>
@@ -2642,6 +2647,11 @@
 	<email>gavin.atkinson@ury.york.ac.uk</email></para>
     </listitem>
 
+    <listitem>
+      <para>Gavin Mu
+	<email>gavin@FreeBSDChina.org</email></para>
+    </listitem>
+
     <listitem>
       <para>Gea-Suan Lin
 	<email>gslin@ccca.nctu.edu.tw</email></para>
@@ -4592,7 +4602,7 @@
     </listitem>
 
     <listitem>
-      <para>Lev Walking
+      <para>Lev Walkin
 	<email>vlm@lionet.info</email></para>
     </listitem>