Merge branch 'mh/fast-import-raise-default-depth'

"fast-import" uses a default pack chain depth that is consistent
with other parts of the system.

* mh/fast-import-raise-default-depth:
  fast-import: increase the default pack depth to 50

Documentation/git-fast-import.txt

@@ -121,7 +121,7 @@ Performance and Compression Tuning
 
 --depth=<n>::
 	Maximum delta depth, for blob and tree deltification.
-	Default is 10.
+	Default is 50.
 
 --export-pack-edges=<file>::
 	After creating a packfile, print a line of data to

fast-import.c

@@ -280,7 +280,7 @@ struct recent_command {
 };
 
 /* Configured limits on output */
-static unsigned long max_depth = 10;
+static unsigned long max_depth = 50;
 static off_t max_packsize;
 static int unpack_limit = 100;
 static int force_update;