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/090-meson-libpam.patch

@@ -0,0 +1,18 @@
+--- a/meson.build
++++ b/meson.build
+@@ -299,10 +299,14 @@ conf.set('HAVE_LIBUDEV', lib_udev.found(
+ 
+ lib_crypt = cc.find_library('crypt')
+ 
+-lib_pam = cc.find_library('pam')
++req_libpam = not (get_option('build-login').disabled() or get_option('build-chfn-chsh').disabled()
++  or get_option('build-su').disabled() or get_option('build-runuser').disabled())
++lib_pam = cc.find_library('pam', required : req_libpam)
+ if lib_pam.found()
+   lib_pam_misc = cc.find_library('pam_misc')
+   lib_pam = [lib_pam, lib_pam_misc]
++else
++  lib_pam_misc = declare_dependency()
+ endif
+ 
+ lib_cryptsetup = dependency(