Fixed the LD_LIBRARY_PATH and PYTHONPATH specifications for scons's test suite on multiuser linux boxes.
The user's environmental variables are now passed down to the tests. Previously they had been ignored.
All of the python tests (minimal and full) had been failing for over a year or so for any installations which actually use the
LD_LIBRARY_PATH and PYTHONPATH environmental variables, which pretty much consists of all multiuser linux
machines.



git-svn-id: https://cantera.googlecode.com/svn/cantera/trunk@2810 02a645c2-efd0-11dd-984d-ab748d24aa7e
Added back Statmech and PecosTransport. 
    Rarefied gas dynamics is an import application area for Sandia, and 
    it represents a potentially important development direction for Cantera.
    These classes provide inroads into that area.


git-svn-id: https://cantera.googlecode.com/svn/cantera/trunk@2811 02a645c2-efd0-11dd-984d-ab748d24aa7e
Took out a print statement that caused crashes on some systems that don't define PYTHONPATH
Thanks Ray for pointing this out.


git-svn-id: https://cantera.googlecode.com/svn/cantera/trunk@2812 02a645c2-efd0-11dd-984d-ab748d24aa7e
Modified License statement slightly to comply with copywrite assertion paperwork.


git-svn-id: https://cantera.googlecode.com/svn/cantera/trunk@2813 02a645c2-efd0-11dd-984d-ab748d24aa7e
Reblessed two tests whose results slightly changed.


git-svn-id: https://cantera.googlecode.com/svn/cantera/trunk@2814 02a645c2-efd0-11dd-984d-ab748d24aa7e
Fixed svn's ignore list for files that are created during build and test


git-svn-id: https://cantera.googlecode.com/svn/cantera/trunk@2815 02a645c2-efd0-11dd-984d-ab748d24aa7e
[SCons] Simplify implementation of changes in r2810

Use the correct platform-independent path separator instead of assuming that it
is ':'.

Determine the PYTHONPATH variable in a single place for each Python version.

git-svn-id: https://cantera.googlecode.com/svn/cantera/trunk@2816 02a645c2-efd0-11dd-984d-ab748d24aa7e
[SCons] Allow boost_thread_lib to specify multiple libraries

git-svn-id: https://cantera.googlecode.com/svn/cantera/trunk@2817 02a645c2-efd0-11dd-984d-ab748d24aa7e
[SCons] Continue running test suite if Python tests crash

If the Python test suite crashes, it won't save a results file, but we can still
run the rest of the tests and report this specific failure.

git-svn-id: https://cantera.googlecode.com/svn/cantera/trunk@2818 02a645c2-efd0-11dd-984d-ab748d24aa7e