More grid demos and some bugs fixed

Made (virtual method) callbacks into Python code more safe, and
removed the confusion if there was a matching method in the base
class.


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/branches/WX_2_2_BRANCH@7081 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

utils/wxPython/distrib/build.py

@@ -275,7 +275,7 @@ class BuildConfig:
             self.TARGET = '$(MODULE)module$(SO)'
             self.OBJEXT = '.o'
             self.HELPERLIB = 'wxPyHelpers'
-            self.HELPERLIBDIR = '/usr/local/lib'
+            self.HELPERLIBDIR = '$(EXECPREFIX)/lib'
             self.CFLAGS = '-DSWIG_GLOBAL -DHAVE_CONFIG_H $(THREAD) -I. '\
                           '`$(WXCONFIG) --cflags` -I$(PYINCLUDE) -I$(EXECINCLUDE) '\
                           '-I$(WXPSRCDIR)'