util-linux: use meson to build

Compiles faster, is PIC by default, and does not have pkgconfig files
with wrong paths.

Add various fixes to it as it seems cross compilation was never tested.

Signed-off-by: Rosen Penev <rosenp@gmail.com>

package/utils/util-linux/patches/100-meson-make-libcap-ng-dependent-on-setpriv.patch

@@ -0,0 +1,31 @@
+From cd23a4336f49ba6a12ade557a09589f2a7c966f4 Mon Sep 17 00:00:00 2001
+From: Rosen Penev <rosenp@gmail.com>
+Date: Mon, 2 May 2022 16:18:33 -0700
+Subject: [PATCH] meson: make libcap-ng dependent on setpriv
+
+Signed-off-by: Rosen Penev <rosenp@gmail.com>
+---
+ meson.build | 5 +++--
+ 1 file changed, 3 insertions(+), 2 deletions(-)
+
+--- a/meson.build
++++ b/meson.build
+@@ -334,7 +334,8 @@ have = cc.has_function(
+ conf.set('HAVE_CRYPT_ACTIVATE_BY_SIGNED_KEY', have ? 1 : false)
+ 
+ lib_cap_ng = dependency(
+-  'libcap-ng')
++  'libcap-ng',
++  required : get_option('build-setpriv'))
+ 
+ lib_selinux = dependency(
+   'libselinux',
+@@ -1754,7 +1755,7 @@ if opt and not is_disabler(exe)
+   exes += exe
+ endif
+ 
+-opt = not get_option('build-setpriv').disabled()
++opt = not get_option('build-setpriv').disabled() and lib_cap_ng.found()
+ exe = executable(
+   'setpriv',
+   setpriv_sources,