Forced spectre_to_spice.py to translate spectre model types "resistor"
and "r2" to SPICE semicondutor resistor model type "r".  The former
is almost certainly correct;  the latter, I'm unsure of.

common/spectre_to_spice.py

diff --git a/common/spectre_to_spice.py b/common/spectre_to_spice.py
index 0bba1c6..a89cdd4 100755
--- a/common/spectre_to_spice.py
+++ b/common/spectre_to_spice.py
@@ -312,7 +312,9 @@
                 # Continue to "if inmodel == 1" block below
             else:
                 fmtline, ispassed = parse_param_line(mmatch.group(3), True, False, True, ispassed)
-                modellines.append('.model ' + mmatch.group(1) + ' ' + mmatch.group(2) + ' ' + fmtline)
+                if isspectre and (modtype == 'resistor' or modtype == 'r2'):
+                    modtype = 'r'
+                modellines.append('.model ' + modname + ' ' + modtype + ' ' + fmtline)
                 if fmtline != '':
                     inparam = True