testByteOrder: use MAIN instead of main

testApp/misc/testByteOrder.cpp

@@ -1,7 +1,8 @@
+#include <testMain.h>
 #include <epicsEndian.h>
 #include <stdio.h>
 
-int main()
+MAIN(testByteOrder)
 {
 printf("EPICS_BYTE_ORDER: %s\n", (EPICS_BYTE_ORDER == EPICS_ENDIAN_LITTLE) ? "little" : "big");
 printf("EPICS_FLOAT_WORD_ORDER: %s\n", (EPICS_FLOAT_WORD_ORDER == EPICS_ENDIAN_LITTLE) ? "little" : "big");