build: remove python 2.7 dependency

Remove the dependency on the 'sysconfig' module, it breaks the build
when $(PYTHON) is python 2.6.

PR-URL: node-forward/node#39
Reviewed-By: Fedor Indutny <fedor@indutny.com>

Makefile

@@ -8,7 +8,8 @@ SIGN ?=
 PREFIX ?= /usr/local
 
 # Determine EXEEXT
-EXEEXT=$(shell $(PYTHON) -c "import sysconfig; print(sysconfig.get_config_var('EXE'))")
+EXEEXT := $(shell $(PYTHON) -c \
+		"import sys; print('.exe' if sys.platform == 'win32' else '')")
 
 NODE ?= ./node$(EXEEXT)
 NODE_EXE = node$(EXEEXT)

tools/install.py

@@ -11,7 +11,6 @@
 import re
 import shutil
 import sys
-import sysconfig
 
 # set at init time
 node_prefix = '/usr/local' # PREFIX variable from Makefile
@@ -128,7 +127,7 @@ def subdir_files(path, dest, action):
     action(files, subdir + '/')
 
 def files(action):
-  exeext=sysconfig.get_config_var('EXE')
+  exeext = '.exe' if sys.platform == 'win32' else ''
   action(['out/Release/node' + exeext], 'bin/node' + exeext)
 
   if 'true' == variables.get('node_use_dtrace'):