test1513: added - verify early progress callback return fail

Verify the change brought in commit 8e11731653061. It makes sure that
returning a failure from the progress callback even very early results
in the correct return code.

tests/data/test1513

@@ -0,0 +1,39 @@
+<testcase>
+<info>
+<keywords>
+PROGRESSGFUNCTION
+</keywords>
+</info>
+
+# Server-side
+<reply>
+</reply>
+
+# Client-side
+<client>
+<server>
+none
+</server>
+<tool>
+lib1513
+</tool>
+ <name>
+return failure immediately from progress callback
+ </name>
+
+# this server/host won't be used for real
+ <command>
+http://localhost/1513
+</command>
+</client>
+
+# Verify data after the test has been "shot"
+<verify>
+<protocol>
+</protocol>
+# 42 == CURLE_ABORTED_BY_CALLBACK
+<errorcode>
+42
+</errorcode>
+</verify>
+</testcase>