9852 enable ld(1) guidance and deflib assertions for the illumos build

@@ -42,10 +42,11 @@
 .KEEP_STATE:
 
 LDLIBS_i386= -lfdisk
 LDLIBS += -lficl-sys -lmd -lcryptoutil -lnvpair -lgen -ladm -lefi
 LDLIBS += -lz -lbe -lzfs -lofmt $(LDLIBS_$(MACH))
+ADJUNCT_LIBS = libz.so
 
 # Writing into string literals is incorrect.  We need to match gcc's
 # behavior, which causes us to take SIGSEGV on such a write.
 CFLAGS +=       $(XSTRCONST)
 CPPFLAGS +=     -D_FILE_OFFSET_BITS=64