Renamed all prefixes to include the major version

This is needed to allow compilation of multiple versions in the same
binary. Also note that the FUSE testing was removed because of related
name issues.

./scripts/prefix.py lfs2

scripts/prefix.py

@@ -5,7 +5,7 @@
 # conflict at compile time.
 #
 # example:
-# $ ./scripts/prefix.py lfs2
+# $ ./scripts/prefix.py lfs22
 
 import os
 import os.path
@@ -16,7 +16,7 @@ import tempfile
 import shutil
 import subprocess
 
-DEFAULT_PREFIX = "lfs"
+DEFAULT_PREFIX = "lfs2"
 
 def subn(from_prefix, to_prefix, name):
     name, count1 = re.subn('\\b'+from_prefix, to_prefix, name)