Revise include order using clang-format-6.0

Run the `clang-format.bash` script to update our C and C++ code to a new
include order `.clang-format`.  Use `clang-format` version 6.0.

Source/CursesDialog/ccmake.cxx

@@ -1,6 +1,14 @@
 /* Distributed under the OSI-approved BSD 3-Clause License.  See accompanying
    file Copyright.txt or https://cmake.org/licensing for details.  */
 
+#include <csignal>
+#include <cstring>
+#include <iostream>
+#include <string>
+#include <vector>
+
+#include "cmsys/Encoding.hxx"
+
 #include "cmCursesForm.h"
 #include "cmCursesMainForm.h"
 #include "cmCursesStandardIncludes.h"
@@ -10,13 +18,6 @@
 #include "cmSystemTools.h"
 #include "cmake.h"
 
-#include "cmsys/Encoding.hxx"
-#include <csignal>
-#include <cstring>
-#include <iostream>
-#include <string>
-#include <vector>
-
 static const char* cmDocumentationName[][2] = {
   { nullptr, "  ccmake - Curses Interface for CMake." },
   { nullptr, nullptr }

Source/CursesDialog/cmCursesBoolWidget.cxx

@@ -2,11 +2,11 @@
    file Copyright.txt or https://cmake.org/licensing for details.  */
 #include "cmCursesBoolWidget.h"
 
+#include <string>
+
 #include "cmCursesWidget.h"
 #include "cmStateTypes.h"
 
-#include <string>
-
 cmCursesBoolWidget::cmCursesBoolWidget(int width, int height, int left,
                                        int top)
   : cmCursesWidget(width, height, left, top)

Source/CursesDialog/cmCursesCacheEntryComposite.cxx

@@ -2,6 +2,12 @@
    file Copyright.txt or https://cmake.org/licensing for details.  */
 #include "cmCursesCacheEntryComposite.h"
 
+#include <cassert>
+#include <utility>
+#include <vector>
+
+#include <cm/memory>
+
 #include "cmCursesBoolWidget.h"
 #include "cmCursesFilePathWidget.h"
 #include "cmCursesLabelWidget.h"
@@ -14,12 +20,6 @@
 #include "cmStringAlgorithms.h"
 #include "cmSystemTools.h"
 
-#include <cm/memory>
-
-#include <cassert>
-#include <utility>
-#include <vector>
-
 cmCursesCacheEntryComposite::cmCursesCacheEntryComposite(
   const std::string& key, int labelwidth, int entrywidth)
   : Key(key)

Source/CursesDialog/cmCursesForm.h

@@ -5,11 +5,11 @@
 
 #include "cmConfigure.h" // IWYU pragma: keep
 
-#include "cmCursesStandardIncludes.h"
+#include <string>
 
 #include "cmsys/FStream.hxx"
 
-#include <string>
+#include "cmCursesStandardIncludes.h"
 
 class cmCursesForm
 {

Source/CursesDialog/cmCursesLabelWidget.h

@@ -5,11 +5,11 @@
 
 #include "cmConfigure.h" // IWYU pragma: keep
 
+#include <string>
+
 #include "cmCursesStandardIncludes.h"
 #include "cmCursesWidget.h"
 
-#include <string>
-
 class cmCursesMainForm;
 
 class cmCursesLabelWidget : public cmCursesWidget

Source/CursesDialog/cmCursesLongMessageForm.cxx

@@ -2,14 +2,14 @@
    file Copyright.txt or https://cmake.org/licensing for details.  */
 #include "cmCursesLongMessageForm.h"
 
+#include <cstdio>
+#include <cstring>
+
 #include "cmCursesForm.h"
 #include "cmCursesMainForm.h"
 #include "cmCursesStandardIncludes.h"
 #include "cmVersion.h"
 
-#include <cstdio>
-#include <cstring>
-
 inline int ctrl(int z)
 {
   return (z & 037);

Source/CursesDialog/cmCursesLongMessageForm.h

@@ -5,12 +5,12 @@
 
 #include "cmConfigure.h" // IWYU pragma: keep
 
-#include "cmCursesForm.h"
-#include "cmCursesStandardIncludes.h"
-
 #include <string>
 #include <vector>
 
+#include "cmCursesForm.h"
+#include "cmCursesStandardIncludes.h"
+
 class cmCursesLongMessageForm : public cmCursesForm
 {
 public:

Source/CursesDialog/cmCursesMainForm.cxx

@@ -2,6 +2,13 @@
    file Copyright.txt or https://cmake.org/licensing for details.  */
 #include "cmCursesMainForm.h"
 
+#include <algorithm>
+#include <cstdio>
+#include <cstring>
+#include <utility>
+
+#include <cm/memory>
+
 #include "cmCursesCacheEntryComposite.h"
 #include "cmCursesDummyWidget.h"
 #include "cmCursesForm.h"
@@ -17,13 +24,6 @@
 #include "cmVersion.h"
 #include "cmake.h"
 
-#include <cm/memory>
-
-#include <algorithm>
-#include <cstdio>
-#include <cstring>
-#include <utility>
-
 inline int ctrl(int z)
 {
   return (z & 037);

Source/CursesDialog/cmCursesMainForm.h

@@ -5,16 +5,16 @@
 
 #include "cmConfigure.h" // IWYU pragma: keep
 
-#include "cmCursesCacheEntryComposite.h"
-#include "cmCursesForm.h"
-#include "cmCursesStandardIncludes.h"
-#include "cmStateTypes.h"
-
 #include <cstddef>
 #include <memory>
 #include <string>
 #include <vector>
 
+#include "cmCursesCacheEntryComposite.h"
+#include "cmCursesForm.h"
+#include "cmCursesStandardIncludes.h"
+#include "cmStateTypes.h"
+
 class cmake;
 
 /** \class cmCursesMainForm

Source/CursesDialog/cmCursesOptionsWidget.h

@@ -5,12 +5,12 @@
 
 #include "cmConfigure.h" // IWYU pragma: keep
 
-#include "cmCursesStandardIncludes.h"
-#include "cmCursesWidget.h"
-
 #include <string>
 #include <vector>
 
+#include "cmCursesStandardIncludes.h"
+#include "cmCursesWidget.h"
+
 class cmCursesMainForm;
 
 class cmCursesOptionsWidget : public cmCursesWidget

Source/CursesDialog/cmCursesPathWidget.cxx

@@ -2,13 +2,13 @@
    file Copyright.txt or https://cmake.org/licensing for details.  */
 #include "cmCursesPathWidget.h"
 
+#include <vector>
+
 #include "cmCursesMainForm.h"
 #include "cmCursesStringWidget.h"
 #include "cmStateTypes.h"
 #include "cmSystemTools.h"
 
-#include <vector>
-
 cmCursesPathWidget::cmCursesPathWidget(int width, int height, int left,
                                        int top)
   : cmCursesStringWidget(width, height, left, top)

Source/CursesDialog/cmCursesPathWidget.h

@@ -5,11 +5,11 @@
 
 #include "cmConfigure.h" // IWYU pragma: keep
 
+#include <string>
+
 #include "cmCursesStandardIncludes.h"
 #include "cmCursesStringWidget.h"
 
-#include <string>
-
 class cmCursesMainForm;
 
 class cmCursesPathWidget : public cmCursesStringWidget

Source/CursesDialog/cmCursesStringWidget.cxx

@@ -2,14 +2,14 @@
    file Copyright.txt or https://cmake.org/licensing for details.  */
 #include "cmCursesStringWidget.h"
 
+#include <cstdio>
+
 #include "cmCursesForm.h"
 #include "cmCursesMainForm.h"
 #include "cmCursesStandardIncludes.h"
 #include "cmCursesWidget.h"
 #include "cmStateTypes.h"
 
-#include <cstdio>
-
 inline int ctrl(int z)
 {
   return (z & 037);

Source/CursesDialog/cmCursesStringWidget.h

@@ -5,11 +5,11 @@
 
 #include "cmConfigure.h" // IWYU pragma: keep
 
+#include <string>
+
 #include "cmCursesStandardIncludes.h"
 #include "cmCursesWidget.h"
 
-#include <string>
-
 class cmCursesMainForm;
 
 /** \class cmCursesStringWidget

Source/CursesDialog/cmCursesWidget.h

@@ -5,11 +5,11 @@
 
 #include "cmConfigure.h" // IWYU pragma: keep
 
+#include <string>
+
 #include "cmCursesStandardIncludes.h"
 #include "cmStateTypes.h"
 
-#include <string>
-
 class cmCursesMainForm;
 
 class cmCursesWidget