Enabled the REDISTRIBUTION option in the Makefile for sky130A.
Corrected the convert_spectre.py to ignore .scs files, which have
no SPICE equivalent.
diff --git a/sky130/Makefile b/sky130/Makefile
index cbe6745..d8eb452 100644
--- a/sky130/Makefile
+++ b/sky130/Makefile
@@ -117,8 +117,8 @@
# Module definitions for each process node
# (Note that MOS is default and therefore not used anywhere)
-# SKY130A_DEFS += -DMETAL5 -DMIM -DREDISTRIBUTION
-SKY130A_DEFS += -DMETAL5 -DMIM
+SKY130A_DEFS += -DMETAL5 -DMIM -DREDISTRIBUTION
+# SKY130A_DEFS += -DMETAL5 -DMIM
# Add staging path
SKY130A_DEFS += -DSTAGING_PATH=${STAGING_PATH}
