K 10
svn:author
V 3
kib
K 8
svn:date
V 27
2020-01-09T10:00:24.177356Z
K 7
svn:log
V 395
Resolve relative argv0 for direct exec mode to absolute path for AT_EXECPATH.

We know the binary relative name and can reliably calculate cwd path.
Because realpath(3) was already linked into ld-elf.so.1, reuse it
there to resolve dots and dotdots making the path more canonical.

Sponsored by:	The FreeBSD Foundation
MFC after:	1 week
Differential revision:	https://reviews.freebsd.org/D23014

END