test.sub now better catches typos and supports more capacitor parameters.

- boom/test.sub (R, C): set R and C by default to "required", so that an
  unparseable value doesn't cause a wildcard search
- boom/test.sub (C): added tolerances
- boom/test.sub (C): added material and special properties (syntax:
  material/property, e.g., NP0/RF)

boom/test.sub

@@ -6,7 +6,7 @@
 -> T=unknown
 
 R[0-9P]* {	# also handle RP...
-    -> T=R
+    -> T=R R=required
     VAL=$R -> R=$VAL
 #    -> TOL=5%
     FN=$% -> TOL=$FN
@@ -18,9 +18,12 @@ RP[0-9]* {
 }
 
 C[0-9]* {
-    -> T=C
+    -> T=C C=required
     VAL=*F -> C=$VAL
     FN=*V -> V=>=$FN
+    FN=$% -> TOL=$FN
+    FN=(NP0|[XYZ][456789][ABCDEFPRSTUV]) -> M=$FN
+    FN=(NP0|[XYZ][456789][ABCDEFPRSTUV])/(*) -> M=$FN:1 X=$FN:2
 }
 
 L[0-9]* {