Make ELPA ready for packaging as RPM
This includes a number of changes: - ScaLAPACK2 on from the openSUSE:science repository is now correctly auto-detected. As ScaLAPACK2 already includes BLACS, an additional BLACS library must not be linked! - The resulting library is now called elpa-2014.06.000.so, as was probably originally intended anyway - The pkg-config file was renamed to elpa-2014.06.000.pc and filled with correct values. With this, a package using ELPA can easily get the necessary compilation and library flags. In this commit, only the "precious" files (Makefile.am, configure.ac, etc.) are included, to make clear what has been changed by hand. In the subsequent commit also all autoconf generated files will follow.