Header deprecation warnings

[mbojan]

I suspect these warnings are consequences of recent ergm changes. As they are deprecations, warnings will turn to errors at some point:

gcc -std=gnu2x -I"/opt/R/4.5.2/lib/R/include" -DNDEBUG  -I'/home/mbojan/R/library/4.5/ergm/include' -I/usr/local/include    -fpic  -g -O2  -c changestats.users.c -o changestats.users.o
In file included from changestats.users.h:13,
                 from changestats.users.c:10:
/home/mbojan/R/library/4.5/ergm/include/edgetree.h:11:9: note: ‘#pragma message: warning: The header file "edgetree.h" has been deprecated in favor of "ergm_edgetree.h" and may be removed in the future.’
   11 | #pragma message ("warning: The header file \"edgetree.h\" has been deprecated in favor of \"ergm_edgetree.h\" and may be removed in the future.")
      |         ^~~~~~~

In file included from changestats.users.h:14:
/home/mbojan/R/library/4.5/ergm/include/changestat.h:11:9: note: ‘#pragma message: warning: The header file "changestat.h" has been deprecated in favor of "ergm_changestat.h" and may be removed in the future.’
   11 | #pragma message ("warning: The header file \"changestat.h\" has been deprecated in favor of \"ergm_changestat.h\" and may be removed in the future.")
      |         ^~~~~~~

These two types referring to edgetree.h and changestat.h re-occur a few times.

Using GCC 13.3.0 and against ergm 4.12.0