util: move all to shared/ and split external dependencies in separate internal libraries

Before:
  $ ldd /lib/systemd/systemd-timestamp
  linux-vdso.so.1 =>  (0x00007fffb05ff000)
  libselinux.so.1 => /lib64/libselinux.so.1 (0x00007f90aac57000)
  libcap.so.2 => /lib64/libcap.so.2 (0x00007f90aaa53000)
  librt.so.1 => /lib64/librt.so.1 (0x00007f90aa84a000)
  libc.so.6 => /lib64/libc.so.6 (0x00007f90aa494000)
  /lib64/ld-linux-x86-64.so.2 (0x00007f90aae90000)
  libdl.so.2 => /lib64/libdl.so.2 (0x00007f90aa290000)
  libattr.so.1 => /lib64/libattr.so.1 (0x00007f90aa08a000)
  libpthread.so.0 => /lib64/libpthread.so.0 (0x00007f90a9e6e000)

After:
  $ ldd systemd-timestamp
  linux-vdso.so.1 =>  (0x00007fff3cbff000)
  libselinux.so.1 => /lib64/libselinux.so.1 (0x00007f5eaa1c3000)
  librt.so.1 => /lib64/librt.so.1 (0x00007f5ea9fbb000)
  libc.so.6 => /lib64/libc.so.6 (0x00007f5ea9c04000)
  /lib64/ld-linux-x86-64.so.2 (0x00007f5eaa3fc000)
  libdl.so.2 => /lib64/libdl.so.2 (0x00007f5ea9a00000)
  libpthread.so.0 => /lib64/libpthread.so.0 (0x00007f5ea97e4000)

1 files changed, 0 insertions, 85 deletions

diff --git a/src/exit-status.h b/src/exit-status.h
deleted file mode 100644
index 44ef879562..0000000000
--- a/src/exit-status.h
+++ /dev/null
@@ -1,85 +0,0 @@
-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
-#ifndef fooexitstatushfoo
-#define fooexitstatushfoo
-
-/***
-  This file is part of systemd.
-
-  Copyright 2010 Lennart Poettering
-
-  systemd is free software; you can redistribute it and/or modify it
-  under the terms of the GNU General Public License as published by
-  the Free Software Foundation; either version 2 of the License, or
-  (at your option) any later version.
-
-  systemd is distributed in the hope that it will be useful, but
-  WITHOUT ANY WARRANTY; without even the implied warranty of
-  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
-  General Public License for more details.
-
-  You should have received a copy of the GNU General Public License
-  along with systemd; If not, see <http://www.gnu.org/licenses/>.
-***/
-
-#include <stdbool.h>
-
-typedef enum ExitStatus {
-        /* EXIT_SUCCESS defined by libc */
-        /* EXIT_FAILURE defined by libc */
-        EXIT_INVALIDARGUMENT = 2,
-        EXIT_NOTIMPLEMENTED = 3,
-        EXIT_NOPERMISSION = 4,
-        EXIT_NOTINSTALLED = 5,
-        EXIT_NOTCONFIGURED = 6,
-        EXIT_NOTRUNNING = 7,
-
-        /* The LSB suggests that error codes >= 200 are "reserved". We
-         * use them here under the assumption that they hence are
-         * unused by init scripts.
-         *
-         * http://refspecs.freestandards.org/LSB_3.1.0/LSB-Core-generic/LSB-Core-generic/iniscrptact.html */
-
-        EXIT_CHDIR = 200,
-        EXIT_NICE,
-        EXIT_FDS,
-        EXIT_EXEC,
-        EXIT_MEMORY,
-        EXIT_LIMITS,
-        EXIT_OOM_ADJUST,
-        EXIT_SIGNAL_MASK,
-        EXIT_STDIN,
-        EXIT_STDOUT,
-        EXIT_CHROOT,   /* 210 */
-        EXIT_IOPRIO,
-        EXIT_TIMERSLACK,
-        EXIT_SECUREBITS,
-        EXIT_SETSCHEDULER,
-        EXIT_CPUAFFINITY,
-        EXIT_GROUP,
-        EXIT_USER,
-        EXIT_CAPABILITIES,
-        EXIT_CGROUP,
-        EXIT_SETSID,   /* 220 */
-        EXIT_CONFIRM,
-        EXIT_STDERR,
-        EXIT_TCPWRAP,
-        EXIT_PAM,
-        EXIT_NETWORK,
-        EXIT_NAMESPACE
-
-} ExitStatus;
-
-typedef enum ExitStatusLevel {
-        EXIT_STATUS_MINIMAL,
-        EXIT_STATUS_SYSTEMD,
-        EXIT_STATUS_LSB,
-        EXIT_STATUS_FULL = EXIT_STATUS_LSB
-} ExitStatusLevel;
-
-const char* exit_status_to_string(ExitStatus status, ExitStatusLevel level);
-
-bool is_clean_exit(int code, int status);
-bool is_clean_exit_lsb(int code, int status);
-
-#endif