Fix build for OSX-arm64

[tschuelia]

With these fixes Eigensoft can also bei installed on OSX-arm64.

Two issues prevent this so far:

1. The finite function is obsolete and should be replaced with isfinite (see https://linux.die.net/man/3/finite). It seems that this was done in many cases, but missed in one.
2. The compiler option -p seems to be invalid for the apple clang compiler, as far as I understand this flag is also not required for other platforms for the normal execution mode of e.g. smartpca (as it is a profiling flag?).

[alexreg]

Thank you very much! I came here with the same problem, and this does the job nicely.

[nsander57]

I also was looking for this fix. Thank you so much!