Add support for Gentoo's dev-libs/libcdio-paranoia file layout and
versioning.

--- audiotools-3.1.1/setup.py
+++ audiotools-3.1.1/setup.py
@@ -190,6 +190,14 @@
                     return tuple(int(s) for s in pkg_config_stdout.split("."))
                 except ValueError:
                     # version isn't all integers
+                    # try to split off libcdio_paranoia extended versioning
+                    if library == 'libcdio_paranoia':
+                        version = pkg_config_stdout.partition('+')[2]
+                        if version:
+                            try:
+                                return tuple(int(s) for s in version.split("."))
+                            except ValueError:
+                                pass
                     return tuple()
             else:
                 # library not found
--- audiotools-3.1.1/src/cdiomodule.h
+++ audiotools-3.1.1/src/cdiomodule.h
@@ -1,11 +1,6 @@
 #include <Python.h>
-#ifdef OLD_PARANOIA
-#include <cdio/cdda.h>
-#include <cdio/paranoia.h>
-#else
-#include <cdio/cdparanoia/cdda.h>
-#include <cdio/cdparanoia/paranoia.h>
-#endif
+#include <cdio/paranoia/cdda.h>
+#include <cdio/paranoia/paranoia.h>
 
 /********************************************************
  Audio Tools, a module and set of tools for manipulating audio data