8005195: Doclint regression tests fail on windows

Reviewed-by: mcimadamore

test/tools/doclint/DocLintTester.java

@@ -107,7 +107,7 @@ public class DocLintTester {
 
     private static final Pattern dirFileLine = Pattern.compile(
             "(?m)"                          // multi-line mode
-            + "^([^: ]+?)"                  // directory part of file name
+            + "^(.*?)"                      // directory part of file name
             + "([A-Za-z0-9.]+:[0-9]+:)");   // file name and line number
 
     String removeFileNames(String s) {