Tweaked dbg script headers to match the mount info log

The main difference being rendering the weight with a single letter "w"
prefix:

  $ ./scripts/dbglfs.py disk -b4096
  littlefs v0.0 4096x256 0x{1,0}.8b w2.512, rev eb7f2a0d
  ...

This lets us add valuable weight info without too much noise.

Adopting this in the dbg scripts is nice for consistency.

scripts/dbgbtree.py

@@ -610,8 +610,11 @@ def main(disk, roots=None, *,
 
         # fetch the root
         btree = Rbyd.fetch(f, block_size, roots, trunk)
-        print('btree %s, rev %08x, weight %d, cksum %08x' % (
+        print('btree %s w%d, rev %08x, cksum %08x' % (
-            btree.addr(), btree.rev, btree.weight, btree.cksum))
+            btree.addr(),
+            btree.weight,
+            btree.rev,
+            btree.cksum))
 
         # look up a bid, while keeping track of the search path
         def btree_lookup(bid, *,

scripts/dbglfs.py

@@ -1884,11 +1884,13 @@ def main(disk, mroots=None, *,
         #### actual debugging begins here
 
         # print some information about the filesystem
-        print('littlefs v%s.%s %dx%d %s, rev %08x, weight %d.%d' % (
+        print('littlefs v%s.%s %dx%d %s w%d.%d, rev %08x' % (
             config.version[0] if config.version[0] is not None else '?',
             config.version[1] if config.version[1] is not None else '?',
             (config.geometry[0] or 0), (config.geometry[1] or 0),
-            mroot.addr(), mroot.rev, bweight//mleaf_weight, 1*mleaf_weight))
+            mroot.addr(),
+            bweight//mleaf_weight, 1*mleaf_weight,
+            mroot.rev))
 
         # dynamically size the id field
         w_width = max(

scripts/dbgmtree.py

@@ -1500,10 +1500,10 @@ def main(disk, mroots=None, *,
         #### actual debugging begins here
 
         # print some information about the mtree
-        print('mtree %s, rev %08x, weight %d.%d, cksum %08x' % (
+        print('mtree %s w%d.%d, rev %08x, cksum %08x' % (
             mroot.addr(),
-            mroot.rev,
             bweight//mleaf_weight, 1*mleaf_weight,
+            mroot.rev,
             mroot.cksum))
 
         # dynamically size the id field

scripts/dbgrbyd.py

@@ -1030,7 +1030,7 @@ def main(disk, blocks=None, *,
         weights[i],
         cksums[i])
 
-    print('rbyd %s, rev %08x, size %d, weight %d, cksum %08x' % (
+    print('rbyd %s w%d, rev %08x, size %d, cksum %08x' % (
         '0x%x.%x' % (block, trunk_)
             if len(blocks) == 1
             else '0x{%x,%s}.%x' % (
@@ -1038,7 +1038,10 @@ def main(disk, blocks=None, *,
                 ','.join('%x' % blocks[(i+1+j) % len(blocks)]
                     for j in range(len(blocks)-1)),
                 trunk_),
-        rev, eoff, weight, cksum))
+        weight,
+        rev,
+        eoff,
+        cksum))
 
     if args.get('log'):
         dbg_log(data, block_size, rev, eoff, weight,