Reland of path ops: fix conic weight and partial coincidence

tests/PathOpsTSectDebug.h

Index: tests/PathOpsTSectDebug.h
diff --git a/tests/PathOpsTSectDebug.h b/tests/PathOpsTSectDebug.h
index 9db904d06bef6df7c66e2f4abe69c17456acdd3b..68ef4b7db187be554ec2bf44f70d4f2ce4fd67b1 100644
--- a/tests/PathOpsTSectDebug.h
+++ b/tests/PathOpsTSectDebug.h
@@ -6,6 +6,14 @@
  */
 
 #include "SkPathOpsTSect.h"
+
+template<typename TCurve, typename OppCurve>
+char SkTCoincident<TCurve, OppCurve>::dumpIsCoincidentStr() const {
+    if (!!fCoincident != fCoincident) {
+        return '?';
+    }
+    return fCoincident ? '*' : 0;
+}
 
 template<typename TCurve, typename OppCurve>
 void SkTCoincident<TCurve, OppCurve>::dump() const {
@@ -201,11 +209,13 @@
 
 template<typename TCurve, typename OppCurve>
 void SkTSpan<TCurve, OppCurve>::dumpID() const {
-    if (fCoinStart.isCoincident()) {
-        SkDebugf("%c", '*');
+    char cS = fCoinStart.dumpIsCoincidentStr();
+    if (cS) {
+        SkDebugf("%c", cS);
     }
     SkDebugf("%d", debugID());
-    if (fCoinEnd.isCoincident()) {
-        SkDebugf("%c", '*');
-    }
-}
+    char cE = fCoinEnd.dumpIsCoincidentStr();
+    if (cE) {
+        SkDebugf("%c", cE);
+    }
+}