this changes the CMake configuration file.
also, the special case of Windows not supporting posix_memalign() is documented.
some more explanations for FFTs and memory alignment are added

It should not be its own chapter. The intro seems to be the right place for it.

Conflicts:
	doc/src/Speed_kokkos.txt
	doc/src/package.txt

Resolved Conflicts:
	doc/src/Packages_details.txt
	doc/src/Python_shlib.txt
	doc/src/fix_manifoldforce.txt

Fix rcb balance issue

Kokkos vs gpu direct

bug fix for compute cluster/atom when computing values used to update…

This is for consistency with other parts of LAMMPS where
such variables have "flag" in their name. Also reduces
confusion with have_gpu_direct() function.

When we can safely detect, that GPU-direct is not available,
change the default setting of Kokkos::gpu_direct_flag from 1 to 0

KOKKOS Package bugfix: Workaround for issue #1037

Add extra check for OpenCL timers