Use package to distribute ldap sub-package

Instead of listing all Python files, use distutils' and setuptools'
`package` direcective to ship the ldap. ldap.controls, ldap.extop, and
ldap.schema packages. The modules ldapurl, ldif, and slaptest are not
packages and therefore still use `py_module`.

The `ldap.controls.pagedresults` module is now shipped and installed.

https://github.com/python-ldap/python-ldap/pull/29
Closes: #26 
Signed-off-by: Christian Heimes <cheimes@redhat.com>

setup.py

@@ -165,39 +165,13 @@ class OpenLDAP2:
   py_modules = [
     'ldapurl',
     'ldif',
-    'ldap',
     'slapdtest',
-    'ldap.async',
-    'ldap.compat',
+  ],
+  packages = [
+    'ldap',
     'ldap.controls',
-    'ldap.controls.deref',
-    'ldap.controls.libldap',
-    'ldap.controls.openldap',
-    'ldap.controls.ppolicy',
-    'ldap.controls.psearch',
-    'ldap.controls.pwdpolicy',
-    'ldap.controls.readentry',
-    'ldap.controls.sessiontrack',
-    'ldap.controls.simple',
-    'ldap.controls.sss',
-    'ldap.controls.vlv',
-    'ldap.cidict',
-    'ldap.dn',
     'ldap.extop',
-    'ldap.extop.dds',
-    'ldap.filter',
-    'ldap.functions',
-    'ldap.ldapobject',
-    'ldap.logger',
-    'ldap.modlist',
-    'ldap.pkginfo',
-    'ldap.resiter',
-    'ldap.sasl',
     'ldap.schema',
-    'ldap.schema.models',
-    'ldap.schema.subentry',
-    'ldap.schema.tokenizer',
-    'ldap.syncrepl',
   ],
   package_dir = {'': 'Lib',},
   data_files = LDAP_CLASS.extra_files,