11394 iconv_modules build could be much more parallel

*** 33,41 ****
--- 33,43 ----
  clean           :=      TARGET = clean
  clobber         :=      TARGET = clobber
  
  all install lint clean clobber: $(SUBDIRS)
  
+ .PARALLEL: $(SUBDIRS)
+ 
  $(SUBDIRS): FRC
          cd $@; $(MAKE) $(TARGET)
  
  FRC: