[patch] verbose mode broken in fstest.py

[Note: I am using whatever version of ZODB that ships with Zope 2.10.7, but this bug _appears_ to still be in trunk, assuming http://svn.zope.org/ZODB/trunk/src/ZODB/scripts/ is the correct SVN repo.]

The verbose option '-v' to fstest.py no longer works (it previously did, in the version shipped with Zope 2.9). It now causes a Python error:
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andrew@zeo:~> /opt/zope210/bin/fstest.py.orig -v /tmp/Session.fs
Traceback (most recent call last):
  File "/opt/zope210/bin/fstest.py.orig", line 228, in ?
    main()
  File "/opt/zope210/bin/fstest.py.orig", line 215, in main
    VERBOSE = VERBOSE + 1
UnboundLocalError: local variable 'VERBOSE' referenced before assignment
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This bug was introduced by r71254, which added the def main(): wrapper. The problem is that it is attempting to use a local variable VERBOSE in the assignment statement, rather than the global variable. This is fixed by a simple patch that declares VERBOSE to be a global variable:
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--- fstest.py.orig 2009-11-05 17:48:17.000000000 -0600
+++ fstest.py 2009-11-05 16:01:58.000000000 -0600
@@ -206,6 +206,7 @@
 def main():
     import getopt

+ global VERBOSE
     try:
         opts, args = getopt.getopt(sys.argv[1:], 'v')
         if len(args) != 1:
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With the global variable declaration added, it now works correctly:
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andrew@zeo:~> /opt/zope210/bin/fstest.py -v /tmp/Session.fs
         4: transaction tid 0x0379d23cb63b7e11 #0
      1111: transaction tid 0x037bd337f5194a11 #1
      1960: transaction tid 0x0381a63f44093266 #2
      2989: transaction tid 0x0381a63f56b5baaa #3
      3428: transaction tid 0x0381a641202d0999 #4
      3866: transaction tid 0x0381a642201f6e55 #5
      4187: transaction tid 0x0381a6424c0e0199 #6
etc.
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