Enable python tests for Native Windows

1) Multiplatorm support for devnull
2) Fixed a bug in the handling of cache files
3) Deleted run-bitcoin-cli as no longer needed

Makefile.am

@@ -204,7 +204,7 @@ endif
 
 dist_noinst_SCRIPTS = autogen.sh
 
-EXTRA_DIST = $(top_srcdir)/share/genbuild.sh qa/pull-tester/rpc-tests.sh qa/pull-tester/run-bitcoin-cli qa/rpc-tests $(DIST_DOCS) $(WINDOWS_PACKAGING) $(OSX_PACKAGING)
+EXTRA_DIST = $(top_srcdir)/share/genbuild.sh qa/pull-tester/rpc-tests.sh qa/rpc-tests $(DIST_DOCS) $(WINDOWS_PACKAGING) $(OSX_PACKAGING)
 
 CLEANFILES = $(OSX_DMG) $(BITCOIN_WIN_INSTALLER)
 

qa/pull-tester/rpc-tests.sh

@@ -5,8 +5,8 @@ CURDIR=$(cd $(dirname "$0"); pwd)
 # Get BUILDDIR and REAL_BITCOIND
 . "${CURDIR}/tests-config.sh"
 
-export BITCOINCLI=${BUILDDIR}/qa/pull-tester/run-bitcoin-cli
 export BITCOIND=${REAL_BITCOIND}
+export BITCOINCLI=${REAL_BITCOINCLI}
 
 #Run the tests
 

qa/pull-tester/run-bitcoin-cli

@@ -1,13 +0,0 @@
-#!/bin/bash
-
-# This is a thin wrapper around bitcoin-cli that strips the Windows-style EOLs
-# from the output if present. It is necessary when using bitcoin-cli.exe on
-# Linux since shells will interpret the line-endings as part of the result.
-
-CURDIR=$(cd $(dirname "$0"); pwd)
-# Get BUILDDIR and REAL_BITCOIND
-
-# Grab the value of $REAL_BITCOINCLI which may be bitcoin-cli.exe.
-. "${CURDIR}/tests-config.sh"
-
-"${REAL_BITCOINCLI}" "$@" | sed 's/\r//'

qa/rpc-tests/test_framework/util.py

@@ -78,8 +78,17 @@ def initialize_chain(test_dir):
     bitcoind and bitcoin-cli must be in search path.
     """
 
-    if not os.path.isdir(os.path.join("cache", "node0")):
+    if (not os.path.isdir(os.path.join("cache","node0"))
-        devnull = open("/dev/null", "w+")
+        or not os.path.isdir(os.path.join("cache","node1")) 
+        or not os.path.isdir(os.path.join("cache","node2")) 
+        or not os.path.isdir(os.path.join("cache","node3"))):
+
+        #find and delete old cache directories if any exist
+        for i in range(4):
+            if os.path.isdir(os.path.join("cache","node"+str(i))): 
+                shutil.rmtree(os.path.join("cache","node"+str(i)))
+
+        devnull = open(os.devnull, "w")
         # Create cache directories, run bitcoinds:
         for i in range(4):
             datadir=initialize_datadir("cache", i)
@@ -171,7 +180,7 @@ def start_node(i, dirname, extra_args=None, rpchost=None, timewait=None, binary=
     args = [ binary, "-datadir="+datadir, "-keypool=1", "-discover=0", "-rest" ]
     if extra_args is not None: args.extend(extra_args)
     bitcoind_processes[i] = subprocess.Popen(args)
-    devnull = open("/dev/null", "w+")
+    devnull = open(os.devnull, "w")
     if os.getenv("PYTHON_DEBUG", ""):
         print "start_node: bitcoind started, calling bitcoin-cli -rpcwait getblockcount"
     subprocess.check_call([ os.getenv("BITCOINCLI", "bitcoin-cli"), "-datadir="+datadir] +