[LTP] [PATCH V2 1/3] tst_module: Add separate declarations of helpers for new tests framework

[Cyril Hrubis]

Hi!
Pushed with a small fix, thanks.

It turned out that there was a typo in the old_module.h header, the
function tst_module_exist() never existed and it's supposed to be
tst_module_exists(). So I've renamed all instances accordingly.

-- 
Cyril Hrubis
chrubis@suse.cz