add liblas-python packages for Python 2.7

[jef]

see RequiresPython

[maphew]

This has been done, but the most recent liblas-devel and liblas-python packages are not selected during install because the setup.ini generator thinks last year's liblas-1.7.0b1-1 is newer than this years liblas-1.7.0-1 (it's the "b", see http://trac.osgeo.org/osgeo4w/wiki/PackagingInstructions#ProblematicPackageVersions).

This can be fix by forcing 1.7.0 as the [curr] version in setup.hint. That manual override might get forgotten when it comes to the next upgrade. I'd think about just removing the beta version from the package archive altogether, unless there's a real case for keeping it.

[maphew]

liblas-python-1.7.0-1 installs to apps/python25/... instead of apps/python27/...

Steven AuCoin reports moving liblas from the former site-packages folder to the other works: ​http://osgeo-org.1560.n6.nabble.com/liblas-installs-to-python25-td4976184.html

I created liblas-python-1.7.0-2 with this change, but I don't know if that is indeed sufficient. Please test.

[maphew]

closing as fixed, per Howard's comment in the thread noted.