Adjust ConfigPlaces.

Index: ietf
--- ietf.orig
+++ ietf
@@ -115,7 +115,7 @@ __license__ = "https://en.wikipedia.org/wiki/WTFPL"
 KnownCmds = ("auth48", "author", "bcp", "bcponly", "charter", "conflict", "diff", "draft", "draftreport", \
 	 "iesg", "mirror", "rfc", "rfcextra", "rfchtml", "rfchtmlized", "rfcinfo", "rg", "std", "stdonly", "tools", \
 	 "tracker")
-ConfigPlaces = ("~/bin/ietf.config", "/usr/local/bin/ietf.config", "~/.ietf/ietf.config")
+ConfigPlaces = ("~/bin/ietf.config", "/usr/local/bin/ietf.config", "~/.ietf/ietf.config", "${SYSCONFDIR}/ietf.config")
 
 # Make a block of text that can be executed in the CLI
 CLICmdCode = ""
