Release 1.6.0 (16-December-2007 by jmpp):

- Revamped the postflight script that is run by Installer.app with our pkg installer to gracefully
handle the addition of PATH, MANPATH and DISPLAY environment variables separately, if needed.
Read http://guide.macports.org/#installing.binary.postflight.details for more information
(jmpp in many commits directly on the release_1_6 branch).

- Remove LD_PREBIND & LD_PREBIND_ALLOW_OVERLAP variables from MacPorts' environment to prevent
prebinding of binaries, which can be harmful on Tiger and above (#13436, mww in r31786).

- Add 'gcc-4.2' option to the configure.compiler Portfile command (mww in r31891).

- Flush port(1) output channel after issuing prompt, when readline is not
available, to ensure prompt is displayed at proper time. (jberry r31338).

- readline is now disabled by default, in order to avoid support issues.
use --enable-readine parameter to configure to enable support for readine.
(jberry r31139, r31140).

- daemondo now monitors kevents for the death of the daemon process, which means that it
now detects the death of processes (even those that aren't direct child processes)
much more reliably. Plus other daemondo logging and doc cleanups.
(jberry in r30313,r30332,r30333,r30334,r30335,r30364).

- dramatic speedup to file, dir, url, work actions (jberry in r31056)

- add option "extract.mkdir [no|yes]" for distfiles that would pollute ${workpath} with
multiple files (mww in r31028)

- add optional configure.pipe output (afb in r29604 & r30824)

- add "startupitem_type none" macports.conf configuration option (#12743, afb in r30823)

- add configure.[awk|bison|pkg_config|pkg_config_path] (r30761)

- Auto-mode for number of parallel build threads (if number of jobs is set to "0") (r30739)

- Add option use_parallel_build [yes|no] to declare if a port can be built in parallel (r30714).

- New SourceForge.jp mirrors list (r30484).

- Display warnings when using old versions of Mac OS X and Xcode Tools
(#12794, afb in r30338 & r30477)

- Remove configure.macosx_deployment_target, add global macosx_deployment_target
(eridius in r30396).

- add support for LZMA compression, for making .tlz archives (afb in r30307)

- add configure.[perl|python|ruby] for interpreters, .install for avoiding breakage
due to coreutils, .libs

- added startupitem.netchange boolean flag (#12931, N_Ox in r30086).

- added generic GNU livecheck (N_Ox in r29812).

- fixed bug where all .mpkg packages were missing their welcome page (afb in r29517)

- better defaults for implicit ui_channels behaviour (eridius in r29498).

- prevent creating PKG packages with /etc or /var or /tmp (#2102, afb in r29445)

- add optional configure.ccache and configure.distcc filters (#5390, afb in r29438)

- Explicitly sort fs-traverse so it behaves predictably on Linux systems
(#12622, eridius in r29412).

- add configure.objc/objcflags for Objective-C

- add optional build.nice (0) and build.jobs (1) modifiers (afb in r28634 & r28673)

- make tclobjc1.0 compile with GNUstep and NXConstantString class (afb in r28668)

- fix bsdmake/gnumake defaults for FreeBSD and Linux platforms (afb in r28660)

- port lint command, for Portfile verification (#463, afb in r28170)

- add configure.macosx_deployment_target for configure flags

- add configure.javac/classpath for Java

- add configure.fflags/fcflags/f90flags for Fortran flags

- Mark "python" group code as deprecated

- Add group code for Python 3.0

- Add more compiler suites for the 'configure.compiler' option

- `port variants` behaves like `port info` in that it parses the Portfile for up-to-date info.
`port variants` also supports the --index flag (eridius in r27919).

- Fix upgrade to properly handle installed versions beginning with letters (eridius in r27900).

- Chris Pickel's GSoC2007 work: registry2.0 & cregistry (mainly r27518 & r27520)

- Eugene Pimenov's GSoC2007 work: Trace lib on unix sockets (r26682).

- Elias Pipping's GSoC2007 work: merge.rb on his personal /users/pipping svn dir.

• Fix mtree checks which inaccurately complained about files in /Applications, /Library & /Developer;
• mtree checks now also warn the user if a port indicates an intended violation and errors are
• temporarily non-fatal (mww & eridius in r27709, r27710, r27719, r27720 & r27773).
  

http://trac.macosforge.org/projects/macports/browser/tags/release_1_5_0/base/ChangeLog