Accepting request 700496 from home:sbrabec:branches:util-linux-2.33.1

Depends on https://build.opensuse.org/request/show/700494!
- Fix problems in reading of login.defs values (bsc#1121197,
  util-linux-login_defs-priority1.patch,
  util-linux-login_defs-priority2.patch,
  util-linux-login_defs-SYS_UID.patch).
- Perform one-time reset of /etc/default/su (bsc#1121197).
- Add virtual symbols for login.defs compatibility (bsc#1121197).
- Add login.defs safety check util-linux-login_defs-check.sh
  (bsc#1121197).
- Drop bc BuildRequires: not needed.

OBS-URL: https://build.opensuse.org/request/show/700496
OBS-URL: https://build.opensuse.org/package/show/Base:System/util-linux?expand=0&rev=398

su.default

@@ -1,14 +1,8 @@
-# Per default, only "su -" will set a new PATH.
-# If this variable is set to "yes" (default is "no"),
-# every su call will overwrite the PATH variable.
+# /etc/default/su is an override for /etc/login.defs for su and runuser
+# (It is also read as a fallback for login.)
+#
+# See /etc/login.defs, su(1) or runuser(1) for more.
+#
+# List of su/runuser variables:
+# ALWAYS_SET_PATH, ENV_PATH, ENV_ROOTPATH, ENV_SUPATH, FAIL_DELAY
 #
-# The recommended default is "yes". The default "no" behavior could have
-# a security implication in applications that use commands without path.
-ALWAYS_SET_PATH=yes
-
-# Default path.
-PATH=/usr/local/bin:/bin:/usr/bin
-
-# Default path for a user invoking su to root.
-SUPATH=/usr/sbin:/bin:/usr/bin:/sbin
-