system/b*: modernise, fix descriptions

system/binutils/APKBUILD

@@ -4,16 +4,16 @@ pkgver=2.32
 pkgrel=5
 pkgdesc="Tools necessary to build programs"
 url="https://www.gnu.org/software/binutils/"
+arch="all"
+# non-PIC is unsupported by musl/ppc
+[ "${CARCH}" != "ppc" ] || options='!check'
+license="GPL-2.0+ AND GPL-3.0+ AND LGPL-2.0+ AND LGPL-2.1+ AND LGPL-3.0+ AND BSD-3-Clause"
 depends=""
 makedepends_build="byacc flex texinfo"
 makedepends_host="zlib-dev"
 makedepends="$makedepends_build $makedepends_host"
 checkdepends="dejagnu"
-arch="all"
-license="GPL-2.0+ AND GPL-3.0+ AND LGPL-2.0+ AND LGPL-2.1+ AND LGPL-3.0+ AND BSD-3-Clause"
 subpackages="$pkgname-dev $pkgname-doc $pkgname-lang $pkgname-libs"
-# non-PIC is unsupported by musl/ppc
-[ "${CARCH}" != "ppc" ] || options='!check'
 source="https://ftp.gnu.org/gnu/$pkgname/$pkgname-$pkgver.tar.xz
 	arm-pie.patch
 	binutils-ld-fix-static-linking.patch
@@ -90,7 +90,6 @@ build() {
 	*)      _hash_style_configure="--enable-default-hash-style=gnu"	;;
 	esac
 
-	cd "$builddir"
 	./configure \
 		--build=$CBUILD \
 		--host=$CHOST \
@@ -117,8 +116,11 @@ build() {
 	make
 }
 
+check() {
+	make check
+}
+
 package() {
-	cd "$builddir"
 	make install DESTDIR="$pkgdir"
 	if [ -d "$pkgdir"/usr/lib64 ]; then
 		die "Something really bad happened."
@@ -133,11 +135,6 @@ package() {
 	fi
 }
 
-check() {
-	cd "$builddir"
-	make check
-}
-
 libs() {
 	pkgdesc="Runtime libraries from binutils"
 

system/bubblewrap/APKBUILD

@@ -22,7 +22,6 @@ source="bubblewrap-$pkgver.tar.gz::https://github.com/projectatomic/bubblewrap/a
 #   - CVE-2019-12439
 
 prepare() {
-	cd "$builddir"
 	srcdir= NOCONFIGURE=1 ./autogen.sh
 	default_prepare
 }

system/bzip2/APKBUILD

@@ -2,7 +2,7 @@
 pkgname=bzip2
 pkgver=1.0.8
 pkgrel=0
-pkgdesc="A high-quality data compression program"
+pkgdesc="Block-sorting file compressor"
 url="https://www.sourceware.org/bzip2/"
 arch="all"
 license="BSD-4-Clause"
@@ -40,18 +40,15 @@ prepare() {
 }
 
 build () {
-	cd "$builddir"
 	make -f Makefile-libbz2_so all
 	make all
 }
 
 check() {
-	cd "$builddir"
 	make check
 }
 
 package() {
-	cd "$builddir"
 	make PREFIX="$pkgdir"/usr install
 	install -D libbz2.so.$pkgver "$pkgdir"/usr/lib/libbz2.so.$pkgver
 	ln -s libbz2.so.$pkgver "$pkgdir"/usr/lib/libbz2.so