wxGUI/about - print also gis_h date

	(merge from devbr6, https://trac.osgeo.org/grass/changeset/37367)


git-svn-id: https://svn.osgeo.org/grass/grass/trunk@37368 15284696-431f-4ddb-bdfa-cd5b030d7da7

gui/wxpython/wxgui.py

@@ -555,7 +555,7 @@ class GMFrame(wx.Frame):
         copyrightFile = open(os.path.join(os.getenv("GISBASE"), "COPYING"), 'r')
         copyrightOut = []
         copyright = copyrightFile.readlines()
-        info.SetCopyright('GIS Library: '+ svn_gis_h_rev + 
+        info.SetCopyright('GIS Library: '+ svn_gis_h_rev + '(' + svn_gis_h_date.split(' ')[1] + ')' + 
                           '\n\n' + wordwrap(''.join(copyright[:11] + copyright[26:-3]),
                                                   550, wx.ClientDC(self)))
         copyrightFile.close()