It existed to support the freestanding mve player, which has not been
maintained in years. Even there, the support can be retained by
aligning the name of the function among the source files. mve_main.c
would need to be converted to C++ to enable full support.
For each link given as http://, verify that the site is accessible over
https:// and, if so, switch to it. These domains were converted:
* llvm.org
* clang.llvm.org
* en.cppreference.com
* www.dxx-rebirth.com
* www.libsdl.org
* www.scons.org