Consider inertia of the puntual mass.
Add two new subparameters to disable linear or torsion springs.
If spring (linear or torsion) is rigid do not integrate, return the equilibrium position.
Remove unused variable.
New bool subtaparmeter 'Origin drags tip'
Correct mistake from previous commit
Merge pull request #107 from genete/dynamics-2

Dynamics improvements
Require boost >= 1.53.0 at configure time
Fix Bug report #570  -  Renaming a ValueNode with same name, Error message display blank old name

assign "old_name" before checking "new_name"
Add boost librairy lib & include path to synfig lib & include path.
Fix SYNFIG_LIBS from last commit

Remove boost library lib path from SYNFIG_LIBS.
Fix missing include (was preventing compilation on Fedora 20)
OSX build: Workaround issues of the latest MacPorts.

See http://trac.macports.org/ticket/42434
Also, the latest MacPorts don't allow to build without sudo. Put a warning about that.
Enhancement #559 - Missing strings for translation

Open with history strings
Typo on Menu entry : workscape --> workspace
Fix Enhancement #589  -  Some actions cpp files are not parsed in transiflex
Link to Bone action should replace existing Bone Link.
Rename ValueBase::Type to ValueBase::TypeId
Class 'Type' - type descriptor for ValueBase
Implement all types for ValueBase
Typo