ALPSCore/ALPSCore: Version 0.5.6-alpha3

The ALPSCore project, based on the ALPS (Algorithms and Libraries for Physics Simulations) project, provides generic algorithms and utilities for physics problems. It strives to increase software reuse in the physics community. This pre-release: Green's Functions module extensions and improvements: real-frequency meshes with linear, quadratic, logarithmic grids. Parameters module improvements: Direct comparizon of porameters with string literals. Documentation improvements: Tutorials expanded and cleaned. Various improvements and bugfixes. For copyright see COPYRIGHT.TXT. For licensing see LICENSE.TXT. For acknowledgment in scientific publications see ACKNOWLEDGE.TXT