MacPorts v1.4.40 released for self update

[James Berry]

Here's the change log:

James

Release 1.4.40 (7-May-2007, tagged at r24909 by jberry):

     - Note the bump in version naming. To leave ourselves lots of  
room in our versioning
       scheme, we've jumped from 1.4.3 to 1.4.40. The floating point  
represenation as
       reported by port version (1.440) will still be the same; we're  
just interpreting
       it differently.

     - variable tracing now works in a much better way and handles  
unsets properly.
       Similarly, ${option}-delete now works better. Depends  
validation no longer
       attempts to validate when the variable is unset. Additionally,  
the validation
       now actually validates each depspec instead of simply finding  
a single spec
       within the list that works (ticket #11868, eridius r24678).

     - macports infrastructure now easier to use from scripts.
       ui_prefix and ui_channels have default implementations, and
       all arguments to dportinit are now optional (ticket #11837,  
eridius r24460).

     - ln now accepts combined flags (ex. ln -sf foo bar) (eridius  
r24452)

     - default_variants now handles multiple values correctly (ticket  
#11828, eridius r24450).

     - ln uses new symlink command so it can create symlinks that  
point to
       files that don't actually exist (eridius r24444).

     - New bare-bones Pextlib command `symlink source target` (ticket  
#11840, eridius r24444).

     - delete reimplemented using fs-traverse (eridius r24435).

     - fs-traverse now uses the fts(3) family of functions instead of  
readdir/opendir.
       This fixes a couple behavioral oddities, and makes deleting  
during traversal work on 10.3
       (ticket #11839, eridius r24423).

     - fs-traverse now takes a list of targets rather than a variable  
number of arguments
       (ticket #11836, eridius r24410).

     - Fixed a potential crasher in fs-traverse when showing error  
message
       (ticket #11827, eridius r24396, thanks sfiera).

     - Fixed a bug where livecheck failed on ports that do not define  
a homepage
       (ticket #11818, pguyot r24319).

     - Added the downloads section of our repo to the macports  
mirrors list (jmpp r24278).

     - Fixed a bug with the archive mode introduced with r23238  
change (1.4.1)
       (pguyot r24273).

     - Trace mode now take dependencies into account when executing  
the activate
       phase. This fixes an unwanted warning when activating ports  
that depend
       on teTeX (pguyot r24199).

     - Support for mpwa submit through "port submit".
       This work is in progress. (jberry)
        - Expose autoconf XAR variable as  
portutil::autoconf::xar_path. (r24194).
        - Start to build portpkg.xar and meta data, hijacking Kevin's
          portsubmit.tcl. (r24195-24196).

     - Revise error messages in port image activation to use syntax that
       matches port(1). (jberry r24543, r24548).

     - Create new interp variable prefix_frozen, which is available  
to port phases
       even when the Portfile redefines prefix. (jberry r24848-r24849)

     - Search for prefix-relative commands in prefix_frozen rather  
than prefix.
       Affects port submit (xar) and port fetch (svn). (jberry r24849)

     - Always create a ~/.macports user directory if it doesn't yet  
exist. (jberry r24831)

     - Move port(1) readline history file to ~/.macports/history  
(jberry r24832, r24843)