this fixes gvfs in caia (mate desktop)

libinput builds some executables which are useful for debugging or
unusual configurations, but not necessary in normal use of the library.
(See libinput(1) and the other referenced man pages.)

Some of these programs require Python, which makes the closure
significantly larger. Splitting /libexec/ and /bin/ to a separate "bin"
output allows systems that don't need these utilities to avoid the
substantial size hit.

http://savannah.gnu.org/forum/forum.php?forum_id=9187

`ps` can show various systemd-related information, like a unit to
which a process belongs. But when it's not compiled it, it shows only
'?' in such fields.

Can be tested with:

    ps -o unit= ax

Semi-automatic update generated by
https://github.com/ryantm/nixpkgs-update tools. This update was made
based on information from
https://repology.org/metapackage/libuv/versions.

libuv: 1.21.0 -> 1.23.0

(cherry picked from commit 3b862a6)

Fixes compilation on non-glibc at minor cost since these are only
used to guard the use of pragmas selectively disabling warnings
based on the GCC version used.

e2fsprogs: fix w/musl, __GNUC_PREREQ is glibc-ism

`tool --version` now gets additional line:
Packaged by https://NixOS.org

- default coreutils is stripped of /share/ (11 -> 2 MiB)
- coreutils-full retains /share/ and adds openssl for faster *sum tools
- NixOS systemPackages contains coreutils-full
- *Support parameter defaults are moved inside
  (it seemed confusing to have `? false` and "at once" with `? isLinux`)

Closure considerations:
+ typical build-time closure will get lighter by ~9 MiB
- typical closure of NixOS installation will grow by ~2 MiB,
  due to referring to both versions.  I think it would be possible to
  re-use most of the utils between the two versions, but the expression
  would get much more complex.

I considered having stdenv with minimal coreutils and the default
`coreutils` attribute being full, but it turned out there were too many
trivial references in nixpkgs, so it didn't seem easy to keep rebuild
impact of openssl from growing significantly.

currently only used for texlive

This reverts a part of the changes made in #40826.
Fixed-output derivations save time and space on rebuilds.

and use fixed hashes

build failed on Darwin
Patch by @veprbl

2.11 is the version used in TexLive 2018

Fixes a horrendous bug that crashes IRC clients, text editors, terminal
emulators that receive invalid Unicode sequence.

This reverts commit edc13ba, reversing
changes made to 90464f6.
Bootstrap tools generation is broken, and I don't know why yet.

Hydra: ?compare=1477053

Gstreamer: 1.14.0 -> 1.14.2