python: add old python 2 package back

According to PEP394 (http://legacy.python.org/dev/peps/pep-0394/)
the 'python' command should refer to 'python2'.

In our case, this means we should reboot the old python package.

We could rename the package name to python2, but that would
just complicate things a bit with other packages, and
since we're doing this reboot, such a complication would be
unnecessary.

Signed-off-by: Alexandru Ardelean <ardeleanalex@gmail.com>

lang/python/patches/080-distutils-dont_adjust_files.patch

@@ -0,0 +1,63 @@
+---
+ Lib/distutils/command/build_scripts.py |   43 +++------------------------------
+ 1 file changed, 4 insertions(+), 39 deletions(-)
+
+--- a/Lib/distutils/command/build_scripts.py
++++ b/Lib/distutils/command/build_scripts.py
+@@ -51,10 +51,7 @@ class build_scripts (Command):
+ 
+ 
+     def copy_scripts (self):
+-        """Copy each script listed in 'self.scripts'; if it's marked as a
+-        Python script in the Unix way (first line matches 'first_line_re',
+-        ie. starts with "\#!" and contains "python"), then adjust the first
+-        line to refer to the current Python interpreter as we copy.
++        """Copy each script listed in 'self.scripts'
+         """
+         _sysconfig = __import__('sysconfig')
+         self.mkpath(self.build_dir)
+@@ -78,41 +75,9 @@ class build_scripts (Command):
+                 if not self.dry_run:
+                     raise
+                 f = None
+-            else:
+-                first_line = f.readline()
+-                if not first_line:
+-                    self.warn("%s is an empty file (skipping)" % script)
+-                    continue
+-
+-                match = first_line_re.match(first_line)
+-                if match:
+-                    adjust = 1
+-                    post_interp = match.group(1) or ''
+-
+-            if adjust:
+-                log.info("copying and adjusting %s -> %s", script,
+-                         self.build_dir)
+-                if not self.dry_run:
+-                    outf = open(outfile, "w")
+-                    if not _sysconfig.is_python_build():
+-                        outf.write("#!%s%s\n" %
+-                                   (self.executable,
+-                                    post_interp))
+-                    else:
+-                        outf.write("#!%s%s\n" %
+-                                   (os.path.join(
+-                            _sysconfig.get_config_var("BINDIR"),
+-                           "python%s%s" % (_sysconfig.get_config_var("VERSION"),
+-                                           _sysconfig.get_config_var("EXE"))),
+-                                    post_interp))
+-                    outf.writelines(f.readlines())
+-                    outf.close()
+-                if f:
+-                    f.close()
+-            else:
+-                if f:
+-                    f.close()
+-                self.copy_file(script, outfile)
++            if f:
++                f.close()
++            self.copy_file(script, outfile)
+ 
+         if os.name == 'posix':
+             for file in outfiles: