ICU-5495 update to tzdata2006o and support the Etc/Unknown time zone and the SystemV/XXX aliases

X-SVN-Rev: 20704
diff --git a/icu4c/source/tools/tzcode/Makefile.in b/icu4c/source/tools/tzcode/Makefile.in
index af9ff6e..401e50c 100644
--- a/icu4c/source/tools/tzcode/Makefile.in
+++ b/icu4c/source/tools/tzcode/Makefile.in
@@ -25,7 +25,7 @@
 YDATA=		$(PRIMARY_YDATA) pacificnew etcetera factory backward
 NDATA=		systemv
 SDATA=		solar87 solar88 solar89
-TDATA=		$(YDATA) $(NDATA) $(SDATA)
+TDATA=		$(YDATA) $(NDATA) $(SDATA) $(srcdir)/icuzones
 YEARISTYPE=     ./yearistype
 
 ZIC = ./zic