Add detailed location to XML output (#2122)

* Add detailed location to XML output

* Fixing build failures

* less cryptic regulary expressions

* correcting typo in test

* Adding file letter to the location attribute, and cleaning up the regular expression in the tests.

* Add remaining test expected output files for XML changes

* spacing fix, adding documentation on changes

src/V3FileLine.cpp

@@ -158,6 +158,15 @@ FileLine::FileLine(FileLine::EmptySecret) {
     }
 }
 
+const string FileLine::xmlDetailedLocation() const {
+    return "loc=\"" +
+        cvtToStr(filenameLetters()) + "," +
+        cvtToStr(firstLineno()) + "," +
+        cvtToStr(firstColumn()) + "," +
+        cvtToStr(lastLineno()) + "," +
+        cvtToStr(lastColumn()) + "\"";
+}
+
 string FileLine::lineDirectiveStrg(int enterExit) const {
     char numbuf[20]; sprintf(numbuf, "%d", lastLineno());
     char levelbuf[20]; sprintf(levelbuf, "%d", enterExit);