Various fixes + cleanup.

- Add parts.rst documentation for Linux kernel.
- Completely fix problems caused by new bootstrap, update checksums for
  /usr.
- Globalise populate_device_nodes.
- Enable deblobbing.

sysa/util-linux-2.19.1/patches/broken-programs.patch

@@ -4,9 +4,9 @@ SPDX-License-Identifier: GPL-2.0-or-later
 
 We disable the following programs for the following reasons:
 
-* script: dosen't build with musl.
-* flock: GCC dosen't like some directive.
-* fstrim: ??? dosen't build (missing/bad linux header?)
+* script: doesn't build with musl.
+* flock: GCC doesn't like some directive.
+* fstrim: ??? doesn't build (missing/bad linux header?)
 * fsfreeze: ditto.
 * hexdump: musl incompatibility.
 * column: musl incompatibility.

sysa/util-linux-2.19.1/util-linux-2.19.1.sh

@@ -9,13 +9,14 @@ src_prepare() {
     AUTOPOINT=true autoreconf -fi
 }
 
+#        --target=i386-unknown-linux-gnu \
+#        --host=i386-unknown-linux-gnu \
+#        --build=i386-unknown-linux-gnu \
 src_configure() {
     ./configure --prefix=${PREFIX} \
         --bindir="${PREFIX}/bin" \
         --sbindir="${PREFIX}/sbin" \
-        --target=i386-unknown-linux-gnu \
-        --host=i386-unknown-linux-gnu \
-        --build=i386-unknown-linux-gnu \
+        --libdir="${PREFIX}/lib/musl" \
         --disable-libuuid \
         --without-ncurses \
         --enable-static \