Added logic to exclude cPickle, cStringIO when compiling under Python 2.x

inst/build_extensions.py

@@ -93,6 +93,12 @@ print
 print '-'*78
 print 'Building extension modules'
 
+# For Python 2, we want to skip some things
+if sys.version[:1]=='2':
+    do('cp ./lib/python/Setup20 ./lib/python/Setup')
+else:
+    do('cp ./lib/python/Setup15 ./lib/python/Setup')
+
 make('lib','python')
 make('lib','python','DocumentTemplate')
 make('lib','python','ZODB')
@@ -100,17 +106,18 @@ make('lib','python','SearchIndex')
 make('lib','python','Shared','DC','xml','pyexpat')
 
 # Try to link/copy cPickle.so to BoboPOS to out-fox
-# stock Python cPickle.
-cd('lib')
-files=filter(
-    lambda f: string.lower(f[:8])=='cpickle.',
-    os.listdir('python')
-    )
-if files:
-    cd('python'); cd('ZODB')
-    for f in files:
-        src=os.path.join('..',f)
-        try: os.link(src,f)
-        except: open(f,'wb').write(open(src,'rb').read())
-    cd('..'); cd('..')
-cd('..')
+# stock Python cPickle if using Python 1.5.2.
+if sys.version[:1] != '2':
+    cd('lib')
+    files=filter(
+        lambda f: string.lower(f[:8])=='cpickle.',
+        os.listdir('python')
+        )
+    if files:
+        cd('python'); cd('ZODB')
+        for f in files:
+            src=os.path.join('..',f)
+            try: os.link(src,f)
+            except: open(f,'wb').write(open(src,'rb').read())
+        cd('..'); cd('..')
+    cd('..')