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

*** 42,51 ****
--- 42,52 ----
  .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