Renamed BNAME -> NAME, CCKSUM -> CKSUM

It's probably better to have a separate names for a tag category and any
specific name, but I can't think of a better name for this tag, and I
hadn't noticed that I was already ignoring the C prefix for CCKSUM tags
in many places.

NAME/CKSUM now mean both the specific tag and tag category, which is a
bit of a hack since both happen to be the 0th-subtype of their
categories.

scripts/dbgmtree.py

@@ -25,7 +25,6 @@ TAG_UATTRLIMIT  = 0x000e
 TAG_GSTATE      = 0x0100
 TAG_GRM         = 0x0100
 TAG_NAME        = 0x0200
-TAG_BNAME       = 0x0200
 TAG_BOOKMARK    = 0x0201
 TAG_REG         = 0x0202
 TAG_DIR         = 0x0203
@@ -181,7 +180,7 @@ def tagrepr(tag, w, size, off=None):
     elif (tag & 0xef00) == TAG_NAME:
         return '%s%s%s %d' % (
             'shrub' if tag & TAG_SHRUB else '',
-            'bname' if (tag & 0xfff) == TAG_BNAME
+            'name' if (tag & 0xfff) == TAG_NAME
                 else 'bookmark' if (tag & 0xfff) == TAG_BOOKMARK
                 else 'reg' if (tag & 0xfff) == TAG_REG
                 else 'dir' if (tag & 0xfff) == TAG_DIR