Make HAL headers C-compatible (#1177)

Also fix the return type of HAL_IsNewControlData() and HAL_MatchType's type.

Since UsageReporting is intended to be namespaced, it is hidden when this is being used in C.

Fixes: #476
Closes: #535
Ref: #1122

hal/src/main/native/sim/DriverStation.cpp

@@ -204,7 +204,7 @@ static void InitLastCountKey(void) {
 }
 #endif
 
-bool HAL_IsNewControlData(void) {
+HAL_Bool HAL_IsNewControlData(void) {
 #ifdef __APPLE__
   pthread_once(&lastCountKeyOnce, InitLastCountKey);
   int* lastCountPtr = static_cast<int*>(pthread_getspecific(lastCountKey));