[LTP] [PATCH v3] lseek: functional SEEK_HOLE and SEEK_DATA test

[Cyril Hrubis]

Hi!
Pushed with minor changes, thanks.

I've added a lapi/seek.h header with fallback defintion for
SEEK_DATA and SEEK_HOLE, dropped the ifdefs from the test, and added a
a check if SEEK_HOLE is implemented to the test setup() function.

And also removed a few backslashes from the tst_res(... lines since
these are not needed at all.

-- 
Cyril Hrubis
chrubis@suse.cz