Commect out spirit additions to doc Jamfile.

They're breaking the documentation build. I suspect they were
accidentally committed anyway. Just commenting it out to get things
working quickly.

[SVN r67899]

doc/Jamfile.v2

@@ -50,7 +50,7 @@ boostbook doc
     <dependency>../libs/thread/doc//thread
     <dependency>../libs/signals2/doc//hello_world_def_code_snippet.xml
     <dependency>../libs/random/doc//random
-    <dependency>../libs/spirit/doc//spirit
+    #<dependency>../libs/spirit/doc//spirit
 
     ## Add path references to the QuickBook generated docs...
 
@@ -74,7 +74,7 @@ boostbook doc
     <implicit-dependency>../libs/thread/doc//thread
     <implicit-dependency>../libs/signals2/doc//hello_world_def_code_snippet.xml
     <implicit-dependency>../libs/random/doc//random
-    <implicit-dependency>../libs/spirit/doc//spirit
+    #<implicit-dependency>../libs/spirit/doc//spirit
 
     <xsl:param>boost.libraries=../../libs/libraries.htm