contrib: fix binary file issues with dumprevlog on Windows

* Fix traceback on dumprevlog: open revlog in mode 'rb' (binary)
* Set stdio to binary mode so that redirected data is not modified

References:
http://selenic.com/pipermail/mercurial/2008-March/018330.html
http://selenic.com/repo/index.cgi/hg/rev/a3fe91b4f6eb

contrib/dumprevlog

@@ -1,21 +1,25
 #!/usr/bin/env python
 # Dump revlogs as raw data stream
 # $ find .hg/store/ -name "*.i" | xargs dumprevlog > repo.dump
 
 import sys
-from mercurial import revlog, node
+from mercurial import revlog, node, util
+
+for fp in (sys.stdin, sys.stdout, sys.stderr):
+    util.set_binary(fp)
 
 for f in sys.argv[1:]:
-    r = revlog.revlog(open, f)
+    binopen = lambda fn: open(fn, 'rb')
+    r = revlog.revlog(binopen, f)
     print "file:", f
     for i in xrange(r.count()):
         n = r.node(i)
         p = r.parents(n)
         d = r.revision(n)
         print "node:", node.hex(n)
         print "linkrev:", r.linkrev(n)
         print "parents:", node.hex(p[0]), node.hex(p[1])
         print "length:", len(d)
         print "-start-"
         print d
         print "-end-"

contrib/undumprevlog

@@ -1,34 +1,37
 #!/usr/bin/env python
 # Undump a dump from dumprevlog
 # $ hg init
 # $ undumprevlog < repo.dump
 
 import sys
 from mercurial import revlog, node, util, transaction
 
+for fp in (sys.stdin, sys.stdout, sys.stderr):
+    util.set_binary(fp)
+
 opener = util.opener('.', False)
 tr = transaction.transaction(sys.stderr.write, opener, "undump.journal")
 while 1:
     l = sys.stdin.readline()
     if not l:
         break
     if l.startswith("file:"):
         f = l[6:-1]
         r = revlog.revlog(opener, f)
         print f
     elif l.startswith("node:"):
         n = node.bin(l[6:-1])
     elif l.startswith("linkrev:"):
         lr = int(l[9:-1])
     elif l.startswith("parents:"):
         p = l[9:-1].split()
         p1 = node.bin(p[0])
         p2 = node.bin(p[1])
     elif l.startswith("length:"):
         length = int(l[8:-1])
         sys.stdin.readline() # start marker
         d = sys.stdin.read(length)
         sys.stdin.readline() # end marker
         r.addrevision(d, tr, lr, p1, p2)
 
 tr.close()