Change generated HTML to UTF-8 encoding

* docs/ChangeLog.xsl docs/newapi.xsl docs/site.xsl: change all
  stylesheets to output UTF-8 HTML instead of ISO Latin 1 which was
  breaking on some people names.

docs/ChangeLog.xsl

@@ -4,7 +4,7 @@
   xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
 
   <!-- Generate XHTML-1.0 transitional -->
-  <xsl:output method="xml" encoding="ISO-8859-1" indent="yes"
+  <xsl:output method="xml" encoding="UTF-8" indent="yes"
       doctype-public="-//W3C//DTD XHTML 1.0//EN"
       doctype-system="http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"/>
 

docs/newapi.xsl

@@ -16,7 +16,7 @@
   <xsl:import href="page.xsl"/>
 
   <!-- Generate XHTML-1.0 transitional -->
-  <xsl:output method="xml" encoding="ISO-8859-1" indent="yes"
+  <xsl:output method="xml" encoding="UTF-8" indent="yes"
       doctype-public="-//W3C//DTD XHTML 1.0//EN"
       doctype-system="http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"/>
 
@@ -573,7 +573,7 @@
     <xsl:document
       href="{concat($htmldir, '/index.html')}"
       method="xml"
-      encoding="ISO-8859-1"
+      encoding="UTF-8"
       doctype-public="-//W3C//DTD XHTML 1.0 Transitional//EN"
       doctype-system="http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
       <xsl:apply-templates select="exsl:node-set($mainpage)" mode="page">
@@ -589,7 +589,7 @@
       <xsl:document
         href="{concat($htmldir, '/libvirt-', @name, '.html')}"
         method="xml"
-        encoding="ISO-8859-1"
+        encoding="UTF-8"
         doctype-public="-//W3C//DTD XHTML 1.0 Transitional//EN"
         doctype-system="http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
         <xsl:apply-templates select="exsl:node-set($subpage)" mode="page">

docs/site.xsl

@@ -9,7 +9,7 @@
 
   <xsl:output
     method="xml"
-    encoding="ISO-8859-1"
+    encoding="UTF-8"
     indent="yes"
     doctype-public="-//W3C//DTD XHTML 1.0 Strict//EN"
     doctype-system="http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"/>