Use components

[gitpeterwind]

Heavily refactorized interface with mrcpp: uses "Components functions" instead of previous ComplexFunctions. QMFunction and function_utils are removed. Requires the latest mrcpp FourComponents library

Almost every file is modified and most of the changes where specifically needed for a particular usage (nothing systematic). All the tests passes, and HF and lda tested for MPI. Please test with you favorite application, as almost each new application required add hoc changes(!)