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It could happen that ELPA stopped with an error but an exit code "0"
was given, i.e. one could assume everything was fine when it was not!
Now each Fortran "stop" was replaced with "stop 1" to prevent this

This closes issues #48

Due to a bug in the Intel compiler some lines could not be
generalised.

Due to bug in Intel compiler some ifdefs are still necessary

single/double macros introduced in elpa2_trans_ev_band_to_full_complex_template.X90, some macro names unified

Conflicts:
	src/elpa1_tridiag_real_template.X90

corrected indentation to simmplify diff of source files

Conflicts:
	src/elpa1_trans_ev_complex_template.X90
	src/elpa1_tridiag_complex_template.X90

Conflicts:
	src/elpa1_tridiag_complex_template.X90
	src/elpa1_tridiag_real_template.X90

Conflicts:
	src/elpa1_trans_ev_complex_template.X90
	src/elpa1_trans_ev_real_template.X90
	src/elpa1_tridiag_complex_template.X90
	src/elpa1_tridiag_real_template.X90

Conflicts:
	src/elpa1_merge_systems_real_template.X90
	src/elpa1_solve_tridi_real_template.X90
	src/elpa1_trans_ev_real_template.X90
	src/elpa1_tridiag_real_template.X90
	src/elpa2_compute_real_template.X90

Conflicts:
	src/elpa1_trans_ev_real_template.X90
	src/elpa1_tridiag_real_template.X90

Conflicts:
	src/elpa1_solve_tridi_real_template.X90

Conflicts:
	src/elpa1_auxiliary.F90
	src/elpa1_tridiag_real_template.X90

gpu tests for elpa 1 added

Conflicts:
	src/elpa1.F90
	src/elpa1_tridiag_real_template.X90
	src/elpa_c_interface.F90
	test/Fortran/test_complex.F90
	test/Fortran/test_complex_single.F90
	test/Fortran/test_real.F90
	test/Fortran/test_real_single.F90
	test/Fortran/test_real_with_c.F90

some intent (in) or (out) added
some comments added

Conflicts:
	src/elpa1.F90
	src/elpa1_compute_real_template.X90