Fix bitmap scaling

Was broken by 66db69a6d9.  Ouch!

conf.d/10-scale-bitmap-fonts.conf

@@ -2,8 +2,13 @@
 <!DOCTYPE fontconfig SYSTEM "fonts.dtd">
 <fontconfig>
 
+<!--
+  If font is bitmap, calculate scale factor.
+  Note that color bitmap fonts have scalable=true, while
+  non-color ones have scalable=false.  Both groups have outline=false.
+  -->
 <match target="font">
-  <test name="scalable" compare="eq">
+  <test name="outline" compare="eq">
     <bool>false</bool>
   </test>
   <edit name="pixelsizefixupfactor" mode="assign">
@@ -13,10 +18,20 @@
     </divide>
   </edit>
 </match>
+<!--
+  For non-scalable bitmap fonts (ie. non-color), skip
+  minor scaling if hinting is enabled.
+  -->
 <match target="font">
+  <test name="outline" compare="eq">
+    <bool>false</bool>
+  </test>
   <test name="scalable" compare="eq">
     <bool>false</bool>
   </test>
+  <test name="hinting" compare="eq">
+    <bool>true</bool>
+  </test>
   <edit name="scalingnotneeded" mode="assign">
     <and>
       <less>
@@ -30,20 +45,7 @@
     </and>
   </edit>
 </match>
-<!--
-  So far we determined the scale factor.  Now, check and if
-  scaling is NOT desirable, just reset the scale factor to 1.0.
-  -->
 <match target="font">
-  <test name="scalable" compare="eq">
-    <bool>false</bool>
-  </test>
-  <test name="pixelsize" target="pattern" compare="less">
-    <double>64</double>
-  </test>
-  <test name="hinting" compare="eq">
-    <bool>true</bool>
-  </test>
   <test name="scalingnotneeded" compare="eq">
     <bool>true</bool>
   </test>
@@ -55,7 +57,7 @@
   If we *are* going to scale, go ahead and do it.
   -->
 <match target="font">
-  <test name="scalable" compare="eq">
+  <test name="outline" compare="eq">
     <bool>false</bool>
   </test>
   <test name="pixelsizefixupfactor" compare="not_eq">