Restore code to use markdown_py as the console script name.

Author: mitya57

setup.py

@@ -30,6 +30,11 @@ def get_version():
 version, version_info, DEVSTATUS = get_version()
 
 
+# The command line script name. Currently set to "markdown_py" so as not to
+# conflict with the perl implimentation (which uses "markdown").
+SCRIPT_NAME = 'markdown_py'
+
+
 long_description = '''
 This is a Python implementation of John Gruber's Markdown_.
 It is almost completely compliant with the reference implementation,
@@ -67,7 +72,7 @@ def get_version():
  packages=['markdown', 'markdown.extensions'],
  entry_points={
  'console_scripts': [
- 'markdown = markdown.__main__:run',
+ '%s = markdown.__main__:run' % SCRIPT_NAME,
  ]
  },
  classifiers=[