Cleaned up the keyevent handling and the state machine transitions.
The cleanup fixes BZDNG-256 and enforces the switch to active
multiline mode from inactive multiline mode whenever the text
changes.

Instead of copying the python files to stage the pymod macro now compiles
the python files and put the compiled version into stage.
Compiling of the python files allows catching of syntax errors at the
make step. In addition it speeds up module loading times for the
first import.

If a dm3 file is not parsed completely this is no error but just an indication that there is more meta data stored in the file.

Any project dependent on OST will also need to do the boost initialization, therefore moving it to a macro avoids code duplication.

changed cmake scripts to allow building as subproject / moved common configuration from startup scripts to separate script

Fixed BZDNG-246; modified AtomImpl::DeleteAllTorsions() and test_view/ test_delete which produced a memeory leak.

Fixed small bug in RenameChain: now it's allowed to rename a chain with its own current name. Also enhanced test on RenameChain. Fixed documentation of RenameChain, RenameAtom

Fixed bug BZDNG-212 (RenameResidue(ResidueHandle, new_name) is missing in EditorBase), added documentation for Rename[Atom|Chain|Residue] functions as well as unit tests. Made some tests compatible with Python 2.4.

"except ExceptionType as var" is only supported in newer versions
of Python