Ticket 48846 - Rlimit checks should detect RLIM_INFINITY
Bug Description: On certain platforms (32 bit) it was possible for dsktune and
other checks to fail as rlim.cur and rlim.max was -1. This would result in a
pattern of rlim.cur < some base limit, failing, even though rlimit implied
infinite. This did not affect 64bit platforms as rlim_infinity for them is
uint64 max.
Fix Description: Fix our various checks to look for and detect RLIM_INFINITY
when set correctly.
https://fedorahosted.org/389/ticket/48846
Author: wibrown
Review by: nhosoi (Thanks!)