- disabled reset of Node attributes in built() during interactive mode
- fix for #2928 (misspelled variable in intelc.py)
- fix for spurious rebuilds, allow caching of the changed() method's value only when called from File.release_target_info()
Merge c3cba85 from Dirk Baechle, fix for spurious rebuilds.  See b4bc497.
- fixed the handling of long options in the command-line parsing (#2929)
Update copyright years for 2014
Corrected messages displayed by Conftests
Make test/option-v.py independent onf specific copyright years.
Make test/Interactive/version.py independent of specific copyright years
No need to update copyright_years in QMTest/TestSCons.py anymore
Update textfile.Substfile documentation
Merged in techtonik/scons (pull request #108), update copyrights to 2014
Merged in ptomulik/scons/conftest-messages (pull request #110)

Corrected messages displayed by Conftests
Merged in dirkbaechle/scons (pull request #106), fix misspelled variable in intelc.py.
Merged in techtonik/scons (pull request #112), improve doc for Textfile. (with additional cleanups.)
Update CHANGES, Release and Announce prior to 2.3.0 release.
Put back into develop mode post-2.3.1 release;

also improve update-release-info.py to use shorter copyright year strings.