Auto-sync with upstream branch release/2.26/master
Upstream commit: fabef2edbc29424a8048bdd60eba1a201f95682b
- CVE-2018-1000001: Make getcwd fail if it cannot obtain an absolute path
(#1533837)
- CVE-2017-16997: Check for empty tokens before dynamic string token
- elf: do not substitute dst in $LD_LIBRARY_PATH twice (swbz#22627)