Patch reported by Anthony Mallet.

This solution worked only for win32 systems, and
created link errors for unix systems...

This reverts commit e7e487ebdf9c550742d4c9525bbb151e25437393.

Conflicts:
	tests/entity.cpp

Conflicts:
	include/dynamic-graph/entity.h

    Call to g_caster function have been replaced by call to
    SignalCaster::getInstance.

    g_pool and g_factory global variables have been replaced by static methods
    getInstance in each class.
    getInstance returns a pointer to the unique instance of the class and
    creates it if needed.

Francois Keith authored 13 years ago and Nicolas Mansard committed 13 years ago

The var EXECUTABLE_NAME does not exist, so the command creates
a wrong linkage between the two libraries.

  This virtual methods is defined in Entity class. Changing the prototype
  breaks the overloading mecanism.

Code cleaning after rewriting (marginal) of sig-cast. Introduction of a specific tracer behaviour for matrix and vector.