fix swab bug so mpl will compile on solaris with cxx 6

svn path=/trunk/matplotlib/; revision=8484

Author: jdh2358

CHANGELOG

@@ -1,3 +1,7 @@
+2010-07-02 Modified CXX/WrapPython.h to fix "swab bug" on solaris so
+           mpl can compile on Solaris with CXX6 in the trunk.  Closes
+           tracker bug 3022815 - JDH
+
 2010-06-30 Added autoscale convenience method and corresponding
            pyplot function for simplified control of autoscaling;
            and changed axis, set_xlim, and set_ylim so that by

CXX/WrapPython.h

@@ -48,6 +48,9 @@
 #if defined(_XPG4)
 #undef _XPG4
 #endif
+#if defined(_XPG3)
+#undef _XPG3
+#endif
 #endif
 
 // Python.h will redefine these and generate warning in the process