2011-10-04  Michael Pippig  <michael.pippig@mathematik.tu-chemnitz.de>

	* kernel/ndft-parallel.c: correct sign of gradient PNFFT

2011-09-28  Michael Pippig  <michael.pippig@mathematik.tu-chemnitz.de>

	* multiple files: add support for gradient PNFFT

2011-09-27  Michael Pippig  <michael.pippig@mathematik.tu-chemnitz.de>

	* pnfft.h, timer.c, configure.ac: ommit usage of restrict keyword

2011-04-08  Michael Pippig  <michael.pippig@mathematik.tu-chemnitz.de>

	* configure.ac: removed commented lines

2011-04-07  Michael Pippig  <michael.pippig@mathematik.tu-chemnitz.de>

	* Finished autotools for PNFFT
	* m4/ax_lib_fftw3.m4: fixed bug while trying libfcs_fftw3_threads
	* m4/ax_lib_pfft.m4:  fixed several bugs

	* api/pnfft.h: fixed included headers

	* api/pnfft.h: corrected GPL headers in all files

2011-04-06  Michael Pippig  <michael.pippig@mathematik.tu-chemnitz.de>

	* First setup of autotools for PNFFT, bootstrap.sh works 


