update deps

Note that here I don't need blaze-markup for cabal to succeed, but Jimmy
reports he does. Seems like Text.Blaze.Renderer.String moved from blaze to
blaze-markup in some version.

debian/control

@@ -33,8 +33,10 @@ Build-Depends:
 	libghc-warp-dev,
 	libghc-blaze-builder-dev,
 	libghc-blaze-html-dev,
+	libghc-blaze-markup-dev,
 	libghc-crypto-api-dev,
 	libghc-hamlet-dev,
+	libghc-clientsession-dev,
 	ikiwiki,
 	perlmagick,
 	git,

doc/install.mdwn

@@ -59,8 +59,10 @@ libraries. To build and use git-annex by hand, you will need:
   * [warp](http://hackage.haskell.org/package/warp)
   * [blaze-builder](http://hackage.haskell.org/package/blaze-builder)
   * [blaze-html](http://hackage.haskell.org/package/blaze-html)
+  * [blaze-markup](http://hackage.haskell.org/package/blaze-markup)
   * [crypto-api](http://hackage.haskell.org/package/crypto-api)
   * [hamlet](http://hackage.haskell.org/package/hamlet)
+  * [clientsession](http://hackage.haskell.org/package/clientsession)
 * Shell commands
   * [git](http://git-scm.com/)
   * [uuid](http://www.ossp.org/pkg/lib/uuid/)

git-annex.cabal

@@ -76,7 +76,7 @@ Executable git-annex
   if flag(Webapp)
     Build-Depends: yesod, yesod-static, case-insensitive, http-types,
      transformers, wai, wai-logger, warp, blaze-builder, blaze-html,
-     crypto-api, hamlet
+     blaze-markup, crypto-api, hamlet, clientsession
     CPP-Options: -DWITH_WEBAPP
 
   if os(darwin)