main/attr: move library from /lib to /usr/lib

And in the process use the standard configure calls. The programs that
use libattr as a dependency, are already installed under /usr. So
there's no point in having this one directly under /lib

main/attr/APKBUILD

@@ -2,7 +2,7 @@
 # Maintainer: Natanael Copa <ncopa@alpinelinux.org>
 pkgname=attr
 pkgver=2.5.2
-pkgrel=1
+pkgrel=2
 pkgdesc="utilities for managing filesystem extended attributes"
 options="checkroot !check" # attr.test fails with no error message
 url="https://savannah.nongnu.org/projects/attr"
@@ -17,16 +17,10 @@ build() {
 	./configure \
 		--build="$CBUILD" \
 		--host="$CHOST" \
-		--prefix=/ \
-		--exec-prefix=/ \
-		--sbindir=/bin \
-		--bindir=/usr/bin \
-		--libdir=/lib \
-		--libexecdir=/usr/lib \
-		--includedir=/usr/include \
+		--prefix=/usr \
+		--sysconfdir=/etc \
 		--mandir=/usr/share/man \
-		--docdir=/usr/share/doc/attr \
-		--datadir=/usr/share \
+		--localstatedir=/var \
 		--disable-nls
 	make
 }
@@ -37,9 +31,6 @@ check() {
 
 package() {
 	make DESTDIR="$pkgdir" install
-
-	mkdir -p "$pkgdir"/usr/lib
-	mv "$pkgdir"/lib/pkgconfig "$pkgdir"/usr/lib
 }
 
 dev() {