Revise C++ coding style using clang-format-6.0

Run the `clang-format.bash` script to update all our C and C++ code to a
new style defined by `.clang-format`.  Use `clang-format` version 6.0.

* If you reached this commit for a line in `git blame`, re-run the blame
  operation starting at the parent of this commit to see older history
  for the content.

* See the parent commit for instructions to rebase a change across this
  style transition commit.

Tests/ObjectLibrary/A/a.h

@@ -1,6 +1,6 @@
 #ifndef A_DEF
-#error "A_DEF not defined"
+#  error "A_DEF not defined"
 #endif
 #ifdef B_DEF
-#error "B_DEF must not be defined"
+#  error "B_DEF must not be defined"
 #endif

Tests/ObjectLibrary/B/b.h

@@ -1,18 +1,18 @@
 #ifdef A_DEF
-#error "A_DEF must not be defined"
+#  error "A_DEF must not be defined"
 #endif
 #ifndef B_DEF
-#error "B_DEF not defined"
+#  error "B_DEF not defined"
 #endif
 
 #if defined(_WIN32) && defined(Bexport)
-#define EXPORT_B __declspec(dllexport)
+#  define EXPORT_B __declspec(dllexport)
 #else
-#define EXPORT_B
+#  define EXPORT_B
 #endif
 
 #if defined(_WIN32) && defined(SHARED_B)
-#define IMPORT_B __declspec(dllimport)
+#  define IMPORT_B __declspec(dllimport)
 #else
-#define IMPORT_B
+#  define IMPORT_B
 #endif

Tests/ObjectLibrary/c.c

@@ -1,7 +1,7 @@
 #if defined(_WIN32) && defined(Cshared_EXPORTS)
-#define EXPORT_C __declspec(dllexport)
+#  define EXPORT_C __declspec(dllexport)
 #else
-#define EXPORT_C
+#  define EXPORT_C
 #endif
 
 extern int a1(void);

Tests/ObjectLibrary/main.c

@@ -1,7 +1,7 @@
 #if defined(_WIN32) && defined(SHARED_C)
-#define IMPORT_C __declspec(dllimport)
+#  define IMPORT_C __declspec(dllimport)
 #else
-#define IMPORT_C
+#  define IMPORT_C
 #endif
 extern IMPORT_C int b1(void);
 extern IMPORT_C int b2(void);