Apply clang-format across the whole tree

Run clang-format (the repo's .clang-format: LLVM base, 120 cols, tabs,
Allman functions) over every source file so the tree is formatter-clean.
Whitespace only -- no behavior change; full x64 + x86 suites pass.

Also set SortIncludes: false in .clang-format. Windows include order is
load-bearing (windows.h must precede tlhelp32.h / mmreg.h / xinput.h /
dinput.h; winsock2.h must precede windows.h), and the default
alphabetical sort reorders tlhelp32.h ahead of windows.h -- a build
break. Leaving order alone keeps the manual, correct grouping.

tests/tool_paths_test.cpp

@@ -10,14 +10,12 @@
 
 using namespace coop;
 
-namespace
-{
+namespace {
 int g_failures = 0;
 void check(bool ok, const char* what)
 {
 	std::printf("%s %s\n", ok ? "  ok:" : "FAIL:", what);
-	if (!ok)
-	{
+	if (!ok) {
 		++g_failures;
 	}
 }
@@ -25,8 +23,7 @@ void check(bool ok, const char* what)
 bool touch(const std::wstring& path)
 {
 	HANDLE h = CreateFileW(path.c_str(), GENERIC_WRITE, 0, nullptr, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, nullptr);
-	if (h == INVALID_HANDLE_VALUE)
-	{
+	if (h == INVALID_HANDLE_VALUE) {
 		return false;
 	}
 	CloseHandle(h);
@@ -35,8 +32,7 @@ bool touch(const std::wstring& path)
 
 std::wstring parent_of(std::wstring dir) // dir has a trailing separator
 {
-	if (!dir.empty())
-	{
+	if (!dir.empty()) {
 		dir.pop_back();
 	}
 	const std::size_t slash = dir.find_last_of(L"\\/");
@@ -62,8 +58,7 @@ int main()
 	check(deployed_artifact_path(near_name.c_str()) == here + near_name, "resolves an artifact next to the exe");
 
 	// one directory up (the deployable root) when it isn't next to the exe.
-	if (have_up)
-	{
+	if (have_up) {
 		check(touch(up_dir + up_name), "created a marker one directory up");
 		check(deployed_artifact_path(up_name.c_str()) == up_dir + up_name,
 		      "falls back to the artifact one directory up");
@@ -74,8 +69,7 @@ int main()
 	      "missing artifact -> next-to-exe fallback path");
 
 	DeleteFileW((here + near_name).c_str());
-	if (have_up)
-	{
+	if (have_up) {
 		DeleteFileW((up_dir + up_name).c_str());
 	}