v2.2.52
More license updates
Fix wrong license notices; add missing notices
Fix editing error
acl: use SHELL from configure
acl: Fix static build installation
acl: respect DESTDIR when installing
libacl: Add acl_extended_file_nofollow()
Add a parameter to quote() to specify which characters to quote
Introduce new WALK_TREE_DEREFERENCE_TOPLEVEL flag