Fix numa01.sh testcases

[metan-ucw]

There are couple of problems that should be fixed:

The support_numa.c with alloc_1MB_shared opens and mmaps a file and while the test is executed in unique temporary directory the helper is called a few times for the same file, we should ensure that the pages are not present in the page cache on subsequent calls. I guess that unlinking the file before we open it should suffice.

The measurements extracted from numastat output show only overall status for the whole process, we should parse /proc/$pid/numa_maps instead where we can get precise number of pages per node for the test file.

The test should be split into separate testcases in the numa runtest file, so instead of "numa tests failed" we will get more granular results.

[metan-ucw]

Also the scenarios where the memory is backed up by a file should be executed against all supported filesystems to make sure the allocation is done correctly.

[metan-ucw]

This is halfway done, some of the problematic tests were rewritten into C and removed from the numa01.sh test.