Added wrappers for wxInputStream and the wxFileSystem family of

classes, contributed by Joerg Baumann

Added wxProcess, including ability to get streams for the child
process's stdio.

Updated the demo


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/branches/WX_2_2_BRANCH@8566 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

wxPython/demo/data/echo.py

@@ -0,0 +1,25 @@
+
+
+"""
+This is a simple little echo program that is used by the wxProcess
+demo.  It reads lines from stdin and echos them back to stdout, until
+there is an EOF on stdin.
+
+Enter text in the field below to send to the stdin of the echo
+process.  Clicking on 'Close Stream' will close the stream in the
+demo, and then echo.py should terminate too...
+"""
+
+import sys
+
+sys.stdout.write( __doc__)
+sys.stdout.flush()
+
+line = sys.stdin.readline()
+while line:
+    line = line[:-1]
+    sys.stdout.write('\nYou typed "%s"\n' % line)
+    sys.stdout.flush()
+    line = sys.stdin.readline()
+
+