Several tweaks to script flags

- Changed multi-field flags to action=append instead of comma-separated.
- Dropped short-names for geometries/powerlosses
- Renamed -Pexponential -> -Plog
- Allowed omitting the 0 for -W0/-H0/-n0 and made -j0 consistent
- Better handling of --xlim/--ylim

Makefile

@@ -170,10 +170,10 @@ coverage: $(GCDA)
 .PHONY: summary sizes
 summary sizes: $(BUILDDIR)lfs.csv
 	$(strip ./scripts/summary.py -Y $^ \
-		-fcode=code_size,$\
-			data=data_size,$\
-			stack=stack_limit,$\
-			struct=struct_size \
+		-fcode=code_size \
+		-fdata=data_size \
+		-fstack=stack_limit \
+		-fstruct=struct_size \
 		--max=stack \
 		$(SUMMARYFLAGS))