Build errors because of argumentless declarations

[peteroupc]

The build of this program fails even if the instructions in the README are followed. This is probably because the source code uses argument-less declarations for functions with arguments.

In addition to the use of error(), the subject of a pending pull request, the source code also declares many functions without arguments, but defines them later to have arguments. Examples are void (*Mf_program)() = NULLFUNC;, static long to32bit(), etc. These declarations abound and it is too tedious to correct all of them. Is there a build option to allow the compiler to accept these declarations?