8411 Build should warn when linking against libraries outside proto area

*** 18,27 ****
--- 18,28 ----
  #
  # CDDL HEADER END
  #
  #
  # Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
+ # Copyright 2017 RackTop Systems.
  #
  
  LIBRARY=        libzonecfg.a
  VERS=           .1
  OBJECTS=        libzonecfg.o getzoneent.o scratchops.o
*** 32,41 ****
--- 33,45 ----
  LDLIBS +=       -lc -lsocket -lnsl -luuid -lnvpair -lsysevent -lsec -lbrand \
                  -lpool -lscf -lproc -luutil -lbsm -lsecdb
  # DYNLIB libraries do not have lint libs and are not linted
  $(DYNLIB) :=    LDLIBS += -lxml2
  
+ # Allow libxml2 to be taken from outside the proto area.
+ $(ADJUNCT_PROTO_NOT_SET)DYNFLAGS += $(ZASSERTDEFLIB)=libxml2.so
+ 
  SRCDIR =        ../common
  CPPFLAGS +=     -I$(ADJUNCT_PROTO)/usr/include/libxml2 -I$(SRCDIR) -D_REENTRANT
  CERRWARN +=     -_gcc=-Wno-uninitialized
  CERRWARN +=     -_gcc=-Wno-parentheses
  $(LINTLIB) := SRCS=     $(SRCDIR)/$(LINTSRC)