chore, import latest sxe-matlab macro package
chore, abstract from matlab/octave mex when building the matapi
chore, also allow mex.h coming from octave/mex.h
Merge branch 'core/matapi'

* core/matapi:
  chore, also allow mex.h coming from octave/mex.h
  chore, abstract from matlab/octave mex when building the matapi
  chore, import latest sxe-matlab macro package