make has_XXX_support functions static, so they can be called without having to create an instance of Info, which requires a fully instantiation of the LAMMPS and Pointers classes

through this change, the list of packages becomes accessible for the
library interface and the python wrapper, e.g. to check whether a
prerequisite packages is installed (simpler/faster for quick highlevel
check than having to try instantiating a specific style).

- remove feature to record the compilation time and date
- remove 'echo -n' based "progress bar"
- update output format for "lmp_machine -h" to be consistent with help output
- move generation of lmpinstalledpkgs.h to be a separate target depending on
  all sources and headers in src folder. this way it is only regenerated
  when files are modified or packages installed

give visual feedback on when the compile starts since gathering the package information can take time

Limit atom energy change in fix dt/reset

Add support for inline format strings to immediate variable substitution

Variable style 'string' substitutes variables in definition

Apply modifications to MEAM & MEAM/C as found by Kyung-Han Kang

Improve fix manifoldforce warning

Add code coverage target to CMake

Bond/react update

Fix the tail correction with pair_nm

Collected bugfixes and updates

cmake: add DOWNLOAD_MSCG option

rebase