Update fmt to version 3.0.0 and fix compatibility issues

Resolves #349.

ext/SConscript

@@ -26,9 +26,12 @@ def prep_gtest(env):
 def prep_fmt(env):
     localenv = prep_default(env)
     license_files.append(('fmtlib', 'fmt/LICENSE.rst'))
-    build(localenv.Command("#include/cantera/ext/format.h",
+    build(localenv.Command("#include/cantera/ext/fmt/format.h",
                            "#ext/fmt/fmt/format.h",
                            Copy('$TARGET', '$SOURCE')))
+    build(localenv.Command("#include/cantera/ext/fmt/ostream.h",
+                           "#ext/fmt/fmt/ostream.h",
+                           Copy('$TARGET', '$SOURCE')))
     return localenv
 
 # each element of libs is: (subdir, (file extensions), prepfunction)

include/cantera/base/ctexceptions.h

@@ -11,7 +11,7 @@
 
 #include <exception>
 #include <string>
-#include "cantera/ext/format.h"
+#include "cantera/ext/fmt/format.h"
 
 namespace Cantera
 {

include/cantera/base/global.h

@@ -18,7 +18,7 @@
 #define CT_GLOBAL_H
 
 #include "ct_defs.h"
-#include "cantera/ext/format.h"
+#include "cantera/ext/fmt/format.h"
 
 namespace Cantera
 {

include/cantera/base/stringUtils.h

@@ -8,7 +8,7 @@
 #define CT_STRINGUTILS_H
 
 #include "ct_defs.h"
-#include "cantera/ext/format.h"
+#include "cantera/ext/fmt/format.h"
 
 #include <string>
 

test_problems/surfSolverTest/surfaceSolver.cpp

@@ -18,6 +18,7 @@
 #include "cantera/kinetics.h"
 #include "cantera/kinetics/ImplicitSurfChem.h"
 #include "cantera/kinetics/solveSP.h"
+#include "cantera/ext/fmt/ostream.h"
 #include <cstdio>
 #include <fstream>
 

test_problems/surfSolverTest/surfaceSolver2.cpp

@@ -27,6 +27,7 @@ static void printUsage()
 #include "cantera/kinetics.h"
 #include "cantera/kinetics/ImplicitSurfChem.h"
 #include "cantera/kinetics/solveSP.h"
+#include "cantera/ext/fmt/ostream.h"
 #include <cstdio>
 #include <fstream>