Pass INSTALL_PREFIX to subdirectories of crypto

Submitted by: strube@physik3.gwdg.de (Hans Werner Strube)

crypto/Makefile.ssl

@@ -106,7 +106,7 @@ install:
 	@for i in $(SDIRS) ;\
 	do \
 	(cd $$i; echo "making install in crypto/$$i..."; \
-	$(MAKE) CC='$(CC)' CFLAG='${CFLAG}' INSTALLTOP='${INSTALLTOP}' PEX_LIBS='${PEX_LIBS}' EX_LIBS='${EX_LIBS}' install ); \
+	$(MAKE) CC='$(CC)' CFLAG='${CFLAG}' INSTALL_PREFIX='${INSTALL_PREFIX}'  INSTALLTOP='${INSTALLTOP}' PEX_LIBS='${PEX_LIBS}' EX_LIBS='${EX_LIBS}' install ); \
 	done;
 
 lint: