passes "make" on linux
use gnutar only on osx
should set LD_PRELOAD instead of DYLD_*
link to -ldl
Merge branch 'master' into kazuho/wip/linux-support
wrap the xxx64 variants as well, and creat(2)
osx check was not working (amends commit 60f118a)
implement hook for unlinkat (only works if AT_CWD is given)
abstract F_GETPATH, compare inodes as well
implement unlinkat not taking AT_FDCWD as an argument (used by rm -rf)
Merge branch 'kazuho/wip/linux-support'