Externalpackages: out into astrid-r1b

Get a wiki together. OpenAD. Get ISSM website together.
https://trac.mcs.anl.gov/projects/ADIC/wiki/ADIC/ISSM

Switch to metis 5.0

Hard stuff: 
wrap MatSetValues and MatAssembly into one routine. 
To do so, store Ke matrices into elements, do not add to global. 
Once all the Ke are built, loop through them and do all the MatSetValues
at once, followed by MatAssembly. 
Do the same for VecSet and VecAssembly.

Wrap all Petsc data types Matrix and Vector objects, and map all operations 
onto these new objects.  Make this preprocessable for configuration using autotools.
We will probably duplicate data, ex: 

Matrix{
	ifdef  PETSC_WRAPPER
	Mat pmatrix; 
	endif
	ifdef  DOUBLE_WRAPPER
	double* pmatrix; 
	endif
	adouble* amatrix;
}

amatrix will be used in adolc. pmatrix will be used in Petsc routines. Matrix will 
have routines to map one into the other.
