updated .gitignore
Revert "'re'added support for user defined SSL validator"

This reverts commit 6d79c63c4c524b2b799988471477c9500b0608e4.
rbld.c: fix warning
use ssl_set_verify() to set user defined validator
gtget.c: remove warning
gtget_utils.c: added missing include directive
ps: use sysconf(_SC_CLK_TCK) instead of HZ macro
tunctl: fix idiotic bug