git-remote-annex: brought back max-git-bundles config

An incremental push that gets converted to a full push due to this
config results in the inManifest having just one bundle in it, and the
outManifest listing every other bundle. So it actually takes up more
space on the special remote. But, it speeds up clone and fetch to not
have to download a long series of bundles for incremental pushes.

Types/GitConfig.hs

@@ -373,6 +373,7 @@ data RemoteGitConfig = RemoteGitConfig
 	, remoteAnnexBwLimitDownload :: Maybe BwRate
 	, remoteAnnexAllowUnverifiedDownloads :: Bool
 	, remoteAnnexConfigUUID :: Maybe UUID
+	, remoteAnnexMaxGitBundles :: Int
 	, remoteAnnexAllowEncryptedGitRepo :: Bool
 	, remoteUrl :: Maybe String
 
@@ -453,6 +454,8 @@ extractRemoteGitConfig r remotename = do
 			readBwRatePerSecond =<< getmaybe "bwlimit-download"
 		, remoteAnnexAllowUnverifiedDownloads = (== Just "ACKTHPPT") $
 			getmaybe ("security-allow-unverified-downloads")
+		, remoteAnnexMaxGitBundles =
+			fromMaybe 100 (getmayberead  "max-git-bundles")
 		, remoteAnnexConfigUUID = toUUID <$> getmaybe "config-uuid"
 		, remoteAnnexShell = getmaybe "shell"
 		, remoteAnnexSshOptions = getoptions "ssh-options"