De-bulk the naive/ directory

naive/ has a lambda/ subdirectory now where all the related stuff was moved.

The gitignores are distributed to their corresponding directories.

Fail whenever sched_setscheduler() wasn't successful. This seemed to be
happened to me recently on my new Gentoo box. It is fine now as it seems...
Outline basics of a new pi-sq; make dist pretty

I added a beginning of a new pi-sq program algorithm in the TODO. I am now
tempted to use Legendre's formula as it turned out that mine was exactly the
same but more complicated. Further expansion has revealed that it is
entirely similar to Legendre's. I only need an efficient Moebius function to
complete a uber-fast pi-sq implementation...

"make dist" is made prettily now. Removed that from the TODO.

Remove a binary crept in with the last commit.
Inline syscalls

All syscalls except clone() are now inline functions. Clone needs to fiddle
around with the stack frame (at least it could in some future :-)) so we
can't inline it. It is a more complicated syscall anyway.

The TODO got an error I observed while testing the latest syscall changes. I
may try to bisect if it was introduced recently after by A-level. Maybe it
is a race condition or an algorithm error because I got 121 as first bad
number in the pt which was above the T = 100...

Inferior enhancements to Makefile and a gitignore.