fix typo in python module

couple more doc tweaks - sigh

fix glitch in ABIVERSION in fix latte

added SPIN package to Section_packages doc

Fixes issue #975

Collected small changes for the next patch release

new ARM makefiles, also some doc tweaks

Collected cmake changes

- improve error detection and messages
- avoid sigma/cutoff to be zero (and thus division by zero)
- move new/delete of temporary storage outside of loop

Merge branch 'cmake-fix-check-for-installed' of https://github.com/akohlmey/lammps into collected-cmake-changes

Merge branch 'record-compile-flags' of https://github.com/akohlmey/lammps into collected-cmake-changes

Update moltemplate tool to version 2.8.6

Spin origin

Bond/react: edge IDs optional

Intel Package: Bug fix when using LRT with minimize and for virial calculation with GNU...