Added back Cantera.h

Note in the near future, we'll require that all Cantera code include this file so that the environment may be set up correctly.

include/cantera/Cantera.h

@@ -0,0 +1,56 @@
+/**
+ * @file Cantera.h
+ *  Basic include file to be used in all Cantera application environments.
+ */
+
+/* 
+ * $Revision: 923 $
+ * $Date: 2012-01-03 10:05:28 -0700 (Tue, 03 Jan 2012) $
+ */
+
+// Copyright 2001  California Institute of Technology
+
+/*
+ *  Note, this include should be the first include that code containing the
+ *  Cantera namespace sees when in the Cantera application environment.
+ */
+
+#ifndef CANTERA_H_INCL
+#define CANTERA_H_INCL
+
+// If we are using this file, then we are in the Cantera Apps environment.
+// Define a variable to signify this fact. 
+#ifndef CANTERA_APP
+#define CANTERA_APP
+#endif
+
+// define the presence of the Cantera_CXX namespace
+namespace Cantera_CXX{ }
+
+// Include global typedefs and values for physical constants using SI units
+#include "base/ct_defs.h"
+
+// some useful functions
+#include "base/global.h"
+
+// the CanteraError exception class
+#include "base/ctexceptions.h"
+
+// The Cantera logger class
+#include "base/logger.h"
+
+// Include the timer
+#include "base/clockWC.h"
+
+// Include routines for reading and writing XML files
+#include "base/xml.h"
+
+// Include string utility routines
+#include "base/stringUtils.h"
+
+// Include the array object
+#include "base/Array.h"
+
+#endif
+
+