split BuildInfo and BuildFlags

The problem with combining these is that Build.Standalone etc need only
the BuildInfo, and since not built with cabal, the BuildFlags ifdefs
were causing bogus warnings.

BuildInfo.hs

@@ -9,103 +9,6 @@
 
 module BuildInfo where
 
-import Data.List
-import Data.Ord
-import qualified Data.CaseInsensitive as CI
-
+-- This file is generated by the configure program with the results of its
+-- probing.
 #include "Build/SysConfig"
-
-buildFlags :: [String]
-buildFlags = filter (not . null)
-	[ ""
-#ifdef WITH_ASSISTANT
-	, "Assistant"
-#else
-#warning Building without the assistant.
-#endif
-#ifdef WITH_WEBAPP
-	, "Webapp"
-#else
-#warning Building without the webapp. You probably need to install Yesod..
-#endif
-#ifdef WITH_PAIRING
-	, "Pairing"
-#else
-#warning Building without local pairing.
-#endif
-#ifdef WITH_S3
-	, "S3"
-#if MIN_VERSION_aws(0,10,6)
-		++ "(multipartupload)"
-#endif
-#if MIN_VERSION_aws(0,13,0)
-		++ "(storageclasses)"
-#endif
-#else
-#warning Building without S3.
-#endif
-#ifdef WITH_WEBDAV
-	, "WebDAV"
-#else
-#warning Building without WebDAV.
-#endif
-#ifdef WITH_INOTIFY
-	, "Inotify"
-#endif
-#ifdef WITH_FSEVENTS
-	, "FsEvents"
-#endif
-#ifdef WITH_KQUEUE
-	, "Kqueue"
-#endif
-#ifdef WITH_DBUS
-	, "DBus"
-#endif
-#ifdef WITH_DESKTOP_NOTIFY
-	, "DesktopNotify"
-#endif
-#ifdef WITH_CONCURRENTOUTPUT
-	, "ConcurrentOutput"
-#else
-#warning Building without ConcurrentOutput
-#endif
-#ifdef WITH_TORRENTPARSER
-	, "TorrentParser"
-#endif
-#ifdef WITH_MAGICMIME
-	, "MagicMime"
-#endif
-	-- Always enabled now, but users may be used to seeing these flags
-	-- listed.
-	, "Feeds"
-	, "Testsuite"
-	]
-
--- Not a complete list, let alone a listing transitive deps, but only
--- the ones that are often interesting to know.
-dependencyVersions :: [String]
-dependencyVersions = map fmt $ sortBy (comparing (CI.mk . fst))
-	[ ("feed", VERSION_feed)
-	, ("uuid", VERSION_uuid)
-	, ("bloomfilter", VERSION_bloomfilter)
-	, ("http-client", VERSION_http_client)
-	, ("persistent-sqlite", VERSION_persistent_sqlite)
-	, ("cryptonite", VERSION_cryptonite)
-#ifdef WITH_S3
-	, ("aws", VERSION_aws)
-#endif
-#ifdef WITH_WEBDAV
-	, ("DAV", VERSION_DAV)
-#endif
-#ifdef WITH_TORRENTPARSER
-	, ("torrent", VERSION_torrent)
-#endif
-#ifdef WITH_WEBAPP
-	, ("yesod", VERSION_yesod)
-#endif 
-#ifdef TOOL_VERSION_ghc
-	, ("ghc", TOOL_VERSION_ghc)
-#endif
-	]
-  where
-	fmt (p, v) = p ++ "-" ++ v