Fix unused function result warnings for usages of `fread` in the C++
.stl importer, by actually using the returned error code.
Reviewed By: sybren
Differential Revision: https://developer.blender.org/D15189
Fixes C++ .stl importer info output having no space between the
number and the word after it.
Reviewed By: Aras Pranckevicius
Differential Revision: https://developer.blender.org/D15240
Designate private variable names as described by the style guide,
and also add `num` at the end of variable names rather than at
the beginning, as discussed in T85728.
A new experimentatl STL importer, written in C++. Roughly 7-9x faster than the
Python based one.
Reviewed By: Aras Pranckevicius, Hans Goudey.
Differential Revision: https://developer.blender.org/D14941
