Add integer docs.

[SVN r58538]

doc/pdf/Jamfile.v2

@@ -42,6 +42,7 @@ install pdf-install
     ../../libs/functional/hash/doc//standalone
     ../../libs/fusion/doc//quickbook
     ../../libs/interprocess/doc//standalone
+    ../../libs/integer/doc//standalone
     ../../libs/intrusive/doc//standalone
     ../../libs/iterator/doc//standalone
     ../../libs/lambda/doc//lambda-doc
@@ -130,3 +131,4 @@ install signals2-install
 
 
 
+