Gets the LLA-coordinates and a transformation matrix from ECEF to ENU out of ECEF coordinates.

First, the LLA coordinates (WGS-84) are computed from the ECEF coordinates. 

With the LLA-coordinates it is possible to construct a rotational matrix.
\begin{equation}
\mat R_{ecef2enu} = \begin{pmatrix}
-\sin \lon				& \cos \lon				&		0	\\
-\sin \lat \cos \lon	& -\sin \lat \sin \lon	& \cos \lat	\\
\cos \lat \cos \lon		& \cos \lat \sin \lon	& \sin \lat	
\end{pmatrix}
\end{equation}
\inCfile{ltp\_def\_from\_ecef\_i(LtpDef\_i* def, EcefCoor\_i* ecef)}{pprz\_geodetic\_int}
\inCfile{ltp\_def\_from\_ecef\_f(LtpDef\_f* def, EcefCoor\_f* ecef)}{pprz\_geodetic\_float}
\inCfile{ltp\_def\_from\_ecef\_d(LtpDef\_d* def, EcefCoor\_d* ecef)}{pprz\_geodetic\_double}