Pass username to hgeditor, remove temporary file

# HG changeset patch
# User Radoslaw "AstralStorm" Szkodzinski <[e-mail]>
# Node ID 5c5d1484b51a53918575a199ab8985160f0ce2d7
# Parent  8c89408a7154d2da94766e957a088407fd0fef93
Pass username to hgeditor, remove temporary file

mercurial/ui.py

@@ -97,9 +97,12 b' class ui:'
                   os.environ.get("HGEDITOR") or
                   os.environ.get("EDITOR", "vi"))
 
+        os.environ["HGUSER"] = self.username()
         util.system("%s %s" % (editor, name), errprefix = "edit failed")
 
         t = open(name).read()
         t = re.sub("(?m)^HG:.*\n", "", t)
 
+        os.unlink(name)
+
         return t