As obvious from the previous commits, this release of ELPA
introduces a (optional) QR-decomposition for real valued
matrices. This option can be used at run-time by either setting
an environment variable, or by calling the ELPA-2 solver for
real matrices with an additional flag.

Thus the ABI changed, w.r.t. previous versions.

Furthermore, the build process of ELPA has been made more
consistent. All optimization flags (especially O1, O2 etc.)
have to be set at build time by the user via the CFLAGS, FCFLAGS,
and CXXFLAGS variables. The configure script does not set
automatically the "O-Flags" anymore.

- cleanup of the file
- add more  (optional) timing information

The qr decomposition is now available as a runtime choice.
Some testing has still to be done

At build time it can be specified that the ELPA test
programs give more detailed timing information, which
is usefull for performace measurements

If specified in the configure step, the test programs
redirect their stdout and stderr output of each MPI
task in a seperate file, which will be stored in a
subdirectory "mpi_stdout".

This will only be done if the environment variable
"REDIRECT_ELPA_TEST_OUTPUT" is set to "true"

These programs have not been updated correctly

Train fdep to recognize

  module procedure ...

lines. Also, previoulsy an fdep internal error aborted make, however the
partially generated dependency file stayed and was used in that form on
a subsequent make call.

It was decided that the version number shall be all of 2014.06.001, that
is including the release version.

Sadly, pkg-config is not too flexible with different versions of
libraries, therefore the pkg-config file will have the full version
number including the release. This might be a bit cumbersome for
dependent projects.

It was decided that the library file shall be called

  libelpa.so.*

without an explicit version string. Version information will be encoded
by using the -version-info parameter of libtool, resulting in an actual
filename as defined by your flavor of Unix.

The file LIBRARY_INTERFACE documents the changes, the current interface
has number 1 and is binary incompatible with the previous version 0.

Conflicts happened only on the print statements with the supported MPI
thread level error message

Small helper module for better error diagnostics

_mt implies thread-safety, which is not what the OpenMP version does.

Additionally, only install a subset of the test-programs

Multiple rules for the same dummy-file were created for modules used by
sources of more than one program. Corrected by including the program
name into the dummy-files

Build servers recommend against calling "abort" functions in a
library. Thus, from now on, ELPA  returns a success flag, which
is a change of ABI!

In order to force the user to honour this, the ELPA drivers
are converted to functions, which implies an adaptation and
rebuild of the user code. The driver functions return a
logical "success", which, if it is false, indicates an
error within the library.

It is advised to check catch and check this
return value in the user code, which calls ELPA.

The value of $TEST_FLAGS at the time make check was called was
hard-coded in test*.sh files due to wrong quoting.

By passing the makefile variable TEST_FLAGS, one can adjust the
computional cost of the test, e.g. reduce it considerably via

  make check TEST_FLAGS="1500 50 16"

These are saved in the .log files by the test-driver anyway and do not
clutter the screen output for the user. But having them can be useful to
find out how some test failed.

- the ascii files "INSTALL", "README", and "RELEASE_NOTES" are
  updated
- the Makefile.example in the test directory is updated

The fdep magic only works within a single Automake target, add the
remaining dependencies by hand. Parallel compilation should now work
also for "make all" again.

Since the tar-balls are availabel on the ELPA website
, http://elpa.rzg.mpg.de/ , this directory is not useful anymore
and just wastes disk space