This PR upgrades GLPK to the latest version 5.0 and the emsdk to 2.0.15.
Update notes for 5.0:
GLPK 5.0 (release date: Dec 16, 2020)
The copyright was transferred to the Free Software Foundation.
To fix some licensing problems the routines in the following
files were disabled by replacing with dummy ones that print an
error message:
src/api/gridgen.c
src/api/netgen.c
src/api/rmfgen.c
src/misc/qmd.c
src/misc/relax4.c
Note that this change does not affect the main faunctionality
of the package.
Some minor bugs were fixed.
This PR upgrades GLPK to the latest version 5.0 and the emsdk to 2.0.15.
Update notes for 5.0:
Change log for emsdk: https://emscripten.org/docs/introducing_emscripten/release_notes.html#changelog. I did not see any breaking change that would affect the current project, but I still have some learning to do to grasp everything that is happening on the makefile.