xpkg is a package format, not an archive format <duh>

git-svn-id: https://svn.macports.org/repository/macports/trunk/base@48759 d073be05-634f-4543-b044-5fe20cf6d1d6

ChangeLog

@@ -62,7 +62,7 @@ Release 1.8.0 (unreleased):
     - Add several new options to port search, looks in name and description by
       default (#15434, raimue)
 
-    - Add xpkg archive type, xar-based format with XML. (afb)
+    - Add xpkg package type, xar-based format with XML. (afb)
 
     - Split portpkg creation out from portsubmit phase. (afb)
 

src/package1.0/portunarchive.tcl

@@ -223,7 +223,7 @@ proc unarchive_command_setup {args} {
 				return -code error "No '$tar' was found on this system!"
 			}
 		}
-		(xar|xpkg) {
+		xar {
 			set xar "xar"
 			if {[catch {set xar [binaryInPath $xar]} errmsg] == 0} {
 				ui_debug "Using $xar"

src/port1.0/portutil.tcl

@@ -2295,7 +2295,7 @@ proc archiveTypeIsSupported {type} {
                 }
             }
         }
-        xar|xpkg {
+        xar {
             set xar "xar"
             if {[catch {set xar [binaryInPath $xar]} errmsg] == 0} {
                 return 0