Update text=auto / core.autocrlf=false behavior

Git for Windows 1.9.4 changed the behavior when the text=auto
attribute is specified and core.autocrlf=false.  Previous observed
behavior would *not* filter files when going into the working
directory, the new behavior *does* filter.  Update our behavior to match.

CHANGELOG.md

@@ -9,3 +9,6 @@ v0.21 + 1
 * Use a map for the treebuilder, making insertion O(1)
 
 * LF -> CRLF filter refuses to handle mixed-EOL files
+
+* LF -> CRLF filter now runs when * text = auto (with Git for Windows 1.9.4)
+

src/crlf.c

@@ -286,7 +286,8 @@ static int crlf_check(
 		if (error < 0)
 			return error;
 
-		if (ca.auto_crlf == GIT_AUTO_CRLF_FALSE)
+		if (ca.crlf_action == GIT_CRLF_GUESS &&
+			ca.auto_crlf == GIT_AUTO_CRLF_FALSE)
 			return GIT_PASSTHROUGH;
 
 		if (ca.auto_crlf == GIT_AUTO_CRLF_INPUT &&

tests/checkout/crlf.c

@@ -279,8 +279,13 @@ void test_checkout_crlf__autocrlf_false_text_auto_attr(void)
 
 	git_checkout_head(g_repo, &opts);
 
-	check_file_contents("./crlf/all-lf", ALL_LF_TEXT_RAW);
-	check_file_contents("./crlf/all-crlf", ALL_CRLF_TEXT_RAW);
+	if (GIT_EOL_NATIVE == GIT_EOL_CRLF) {
+		check_file_contents("./crlf/all-lf", ALL_LF_TEXT_AS_CRLF);
+		check_file_contents("./crlf/all-crlf", ALL_CRLF_TEXT_AS_CRLF);
+	} else {
+		check_file_contents("./crlf/all-lf", ALL_LF_TEXT_RAW);
+		check_file_contents("./crlf/all-crlf", ALL_CRLF_TEXT_RAW);
+	}
 }
 
 void test_checkout_crlf__autocrlf_true_text_auto_attr(void)