Revert "Cleanup: remove legacy mesh save support"
-rw-r--r-- 215 .arcconfig
-rw-r--r-- 795 .editorconfig
-rw-r--r-- 553 .gitignore
-rw-r--r-- 537 .gitmodules
-rw-r--r-- 63843 CMakeLists.txt
-rw-r--r-- 302 COPYING
-rw-r--r-- 17081 GNUmakefile
drwxr-xr-x - build_files
drwxr-xr-x - doc
drwxr-xr-x - extern
drwxr-xr-x - intern
-rw-r--r-- 2092 make.bat
drwxr-xr-x - release
drwxr-xr-x - source
drwxr-xr-x - tests