hgrc.d: separate namespace for mercurial scripts 9diff and 9mail

contrib/plan9/hgrc.d/9mail.rc

@@ -0,0 +1,4 b''
+# The 9mail to support patchbomb and other email wrappers
+[email]
+method = /bin/mercurial/9mail
+

contrib/plan9/hgrc.d/9diff.rc

@@ -4,4 +4,4 b''
 extdiff =
 
 [extdiff]
-9diff = 9diff -cm $parent $child $root
+9diff = /bin/mercurial/9diff -cm $parent $child $root