Test a merge of a symlink against an executable file.

This should result in a conflict, but the symlink always wins.

tests/test-merge-types

@@ -0,0 +1,36 b''
+#!/bin/sh
+
+hg init
+echo a > a
+hg ci -Amadd
+
+chmod +x a
+hg ci -mexecutable
+
+hg up 0
+rm a
+ln -s symlink a
+hg ci -msymlink
+
+hg merge
+
+echo % symlink is left parent, executable is right
+
+if [ -L a ]; then
+    echo a is a symlink
+    readlink a
+elif [ -x a ]; then
+    echo a is executable
+fi
+
+hg update -C 1
+hg merge
+
+echo % symlink is right parent, executable is left
+
+if [ -L a ]; then
+    echo a is a symlink
+    readlink a
+elif [ -x a ]; then
+    echo a is executable
+fi