changed openssl makefile so it defers to already set ranlib, ar

dmg/openssl-0.9.8g/Makefile

@@ -65,8 +65,8 @@ PEX_LIBS=
 EX_LIBS= 
 EXE_EXT= 
 ARFLAGS= 
-AR=ar $(ARFLAGS) r
-RANLIB= /usr/bin/ranlib
+AR ?= ar $(ARFLAGS) r
+RANLIB ?= /usr/bin/ranlib
 PERL= /usr/bin/perl
 TAR= tar
 TARFLAGS= --no-recursion