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/Module/WriteCompilerDetectionHeader/compile_tests.h

@@ -7,21 +7,21 @@
    JOIN(EXPECTED_COMPILER_, FEATURE))
 
 #if !CHECK(CXX_DELEGATING_CONSTRUCTORS)
-#error cxx_delegating_constructors expected availability did not match.
+#  error cxx_delegating_constructors expected availability did not match.
 #endif
 
 #if !CHECK(CXX_VARIADIC_TEMPLATES)
-#error cxx_variadic_templates expected availability did not match.
+#  error cxx_variadic_templates expected availability did not match.
 #endif
 
 #if !CHECK(VERSION_MAJOR)
-#error Compiler major version did not match.
+#  error Compiler major version did not match.
 #endif
 
 #if !CHECK(VERSION_MINOR)
-#error Compiler minor version did not match.
+#  error Compiler minor version did not match.
 #endif
 
 #if !CHECK(VERSION_PATCH)
-#error Compiler patch version did not match.
+#  error Compiler patch version did not match.
 #endif

Tests/Module/WriteCompilerDetectionHeader/main.c

@@ -3,25 +3,25 @@
 
 #if !defined(TEST_COMPILER_C_FUNCTION_PROTOTYPES) ||                          \
   !TEST_COMPILER_C_FUNCTION_PROTOTYPES
-#error Expected TEST_COMPILER_C_FUNCTION_PROTOTYPES
+#  error Expected TEST_COMPILER_C_FUNCTION_PROTOTYPES
 #endif
 
 #if !EXPECTED_COMPILER_C_FUNCTION_PROTOTYPES
-#error Expected EXPECTED_COMPILER_C_FUNCTION_PROTOTYPES
+#  error Expected EXPECTED_COMPILER_C_FUNCTION_PROTOTYPES
 #endif
 
 #if !defined(TEST_COMPILER_C_RESTRICT) || !TEST_COMPILER_C_RESTRICT
-#if EXPECTED_COMPILER_C_RESTRICT
-#error Expected TEST_COMPILER_C_RESTRICT
-#endif
+#  if EXPECTED_COMPILER_C_RESTRICT
+#    error Expected TEST_COMPILER_C_RESTRICT
+#  endif
 #else
-#if !EXPECTED_COMPILER_C_RESTRICT
-#error Expect no TEST_COMPILER_C_RESTRICT
-#endif
+#  if !EXPECTED_COMPILER_C_RESTRICT
+#    error Expect no TEST_COMPILER_C_RESTRICT
+#  endif
 #endif
 
 #ifdef TEST_COMPILER_CXX_STATIC_ASSERT
-#error Expect no CXX features defined
+#  error Expect no CXX features defined
 #endif
 
 int main()

Tests/Module/WriteCompilerDetectionHeader/main.cpp

@@ -5,7 +5,7 @@
 #include "compile_tests.h"
 
 #ifdef TEST_COMPILER_C_STATIC_ASSERT
-#error Expect no C features defined
+#  error Expect no C features defined
 #endif
 
 TEST_STATIC_ASSERT(true);

Tests/Module/WriteCompilerDetectionHeader/main_multi.c

@@ -3,25 +3,25 @@
 
 #if !defined(MULTI_COMPILER_C_FUNCTION_PROTOTYPES) ||                         \
   !MULTI_COMPILER_C_FUNCTION_PROTOTYPES
-#error Expected MULTI_COMPILER_C_FUNCTION_PROTOTYPES
+#  error Expected MULTI_COMPILER_C_FUNCTION_PROTOTYPES
 #endif
 
 #if !EXPECTED_COMPILER_C_FUNCTION_PROTOTYPES
-#error Expected EXPECTED_COMPILER_C_FUNCTION_PROTOTYPES
+#  error Expected EXPECTED_COMPILER_C_FUNCTION_PROTOTYPES
 #endif
 
 #if !defined(MULTI_COMPILER_C_RESTRICT) || !MULTI_COMPILER_C_RESTRICT
-#if EXPECTED_COMPILER_C_RESTRICT
-#error Expected MULTI_COMPILER_C_RESTRICT
-#endif
+#  if EXPECTED_COMPILER_C_RESTRICT
+#    error Expected MULTI_COMPILER_C_RESTRICT
+#  endif
 #else
-#if !EXPECTED_COMPILER_C_RESTRICT
-#error Expect no MULTI_COMPILER_C_RESTRICT
-#endif
+#  if !EXPECTED_COMPILER_C_RESTRICT
+#    error Expect no MULTI_COMPILER_C_RESTRICT
+#  endif
 #endif
 
 #ifdef MULTI_COMPILER_CXX_STATIC_ASSERT
-#error Expect no CXX features defined
+#  error Expect no CXX features defined
 #endif
 
 int main()

Tests/Module/WriteCompilerDetectionHeader/multi_files.cpp

@@ -5,7 +5,7 @@
 #include "compile_tests.h"
 
 #ifdef MULTI_COMPILER_C_STATIC_ASSERT
-#error Expect no C features defined
+#  error Expect no C features defined
 #endif
 
 MULTI_STATIC_ASSERT(true);