8516 Suppress gcc errors with -Wno- in Makefile for usr/src/cmd

*** 18,27 ****
--- 18,28 ----
  #
  # CDDL HEADER END
  #
  
  #
+ # Copyright 2017 Gary Mills
  # Copyright 2010 Sun Microsystems, Inc.  All rights reserved.
  # Use is subject to license terms.
  #
  
  LIBRARY =       libld.a
*** 92,101 ****
--- 93,106 ----
  CERRWARN += -_gcc=-Wno-uninitialized
  CERRWARN += -_gcc=-Wno-switch
  CERRWARN += -_gcc=-Wno-char-subscripts
  CERRWARN += -_gcc=-Wno-type-limits
  
+ # Suppress the error for: _vdp
+ pics/version32.o pics/version64.o := \
+     CERRWARN += -_gcc=-Wno-unused-but-set-variable
+ 
  # Location of the shared relocation engines maintained under usr/src/uts.
  #
  KRTLD_I386 = $(SRCBASE)/uts/$(VAR_PLAT_i386)/krtld
  KRTLD_AMD64 = $(SRCBASE)/uts/$(VAR_PLAT_amd64)/krtld
  KRTLD_SPARC = $(SRCBASE)/uts/$(VAR_PLAT_sparc)/krtld