add load/store sketches+fingerprints & store them

Fix corresponding Commit tests by adding sketches and fingerprints files in
repo_8k and repo_8k_zlib.

Also enhance CommitTests by checking recipe files

1 files changed, 7 insertions, 5 deletions

diff --git a/const.go b/const.go
index 2c58dd6..d5ec7f0 100644
--- a/const.go
+++ b/const.go
@@ -1,9 +1,11 @@
 package main
 
 const (
-	chunksName = "chunks"
-	chunkIdFmt = "%015d"
-	versionFmt = "%05d"
-	filesName  = "files"
-	recipeName = "recipe"
+	chunksName       = "chunks"
+	chunkIdFmt       = "%015d"
+	versionFmt       = "%05d"
+	filesName        = "files"
+	fingerprintsName = "fingerprints"
+	recipeName       = "recipe"
+	sketchesName     = "sketches"
 )