Log Message:
pfstools: updated to 2.2.0

pfstools 2.2.0 <12.08.2021>

This is mostly a bug-fix release with many fixes allowing to work with newer \ 
version of libraries. Several compilation issues have been resolved on Ubuntu \ 
18.04, 20.04 and Cygwin. The HDR merging (pfshdrcalibrate) uses now better, \ 
noise-optimal weights, which should reduce noise for darker image parts.

	* Added: v210 format in pfsinyuv
	* Fixed: memleak in pfssize
	* Fixed: Fix format-security errors with Octave 5.1 (thanks to Orion Poplawski)
	* Added: pfs_automerge
	* Fixed: typos in the documentation (thanks to Andreas Metzler)
	* Added: simple deghosting in pfshdrcalibrate (-d option)
	* Fixed: pfsalign now uses free AKAZE feature detector, avoiding issues with \ 
missing non-free OpenCV classes
	* Fixed: Updated installation instruction for Ubuntu 18.04
	* Fixed: Fixed a number of compiler warnings from g++ 7.4.0
	* Fixed: Octave interface upgraded to Octave-6 (thanks to Michal)
	* Fixed: pfstmo_durand02 - reversed the old fix that made images \ 
over-saturated. Now 99.5th percentile is mapped to white.
	* Removed: pfsinjpeghdr, pfsoutjpeghdr (discontinued)
	* Fixed: compilation fails with GCC11/std=c++17, duplicate "clamp" \ 
definition (thanks to Stefan)
	* Added: pfshdrcalibrate now performs exposure merging in a noise-optimal manner
	* Added: pfsindcraw now calls libraw's dcraw_emu instead of dcraw if the former \ 
is available