10804 Enable unused warnings outside of uts
Reviewed by: Andy Stormont <astormont@racktopsystems.com>
Reviewed by: Toomas Soome <tsoome@me.com>

*** 1035,1044 ****
--- 1035,1046 ----
  CERRWARN += -_gcc=-Wno-char-subscripts
  CERRWARN += -_gcc=-Wno-clobbered
  CERRWARN += -_gcc=-Wno-unused-function
  CERRWARN += -_gcc=-Wno-address
  
+ $(RELEASE_BUILD)CERRWARN += -_gcc=-Wno-unused
+ 
  # not linted
  SMATCH=off
  
  # Setting THREAD_DEBUG = -DTHREAD_DEBUG (make THREAD_DEBUG=-DTHREAD_DEBUG ...)
  # enables ASSERT() checking in the threads portion of the library.