rename hid_init() to hidapi_hid_init() to avoid collision with usbhid

Index: hidtest/hidtest.cpp
--- hidtest/hidtest.cpp.orig
+++ hidtest/hidtest.cpp
@@ -43,7 +43,7 @@ int main(int argc, char* argv[])
 
 	struct hid_device_info *devs, *cur_dev;
 	
-	if (hid_init())
+	if (hidapi_hid_init())
 		return -1;
 
 	devs = hid_enumerate(0x0, 0x0);
