community/dateutils: clarify license and cleanup a bit

Taken from https://github.com/alpinelinux/aports/pull/3458

community/dateutils/APKBUILD

@@ -2,11 +2,11 @@
 # Maintainer: Francesco Colista <fcolista@alpinelinux.org>
 pkgname=dateutils
 pkgver=0.4.3
-pkgrel=0
+pkgrel=1
 pkgdesc="Utilities for fast date-time calculations and conversion"
 url="http://hroptatyr.github.com/dateutils/"
 arch="all"
-license="BSD"
+license="BSD-3-Clause"
 makedepends="m4 texinfo automake autoconf linux-headers"
 subpackages="$pkgname-doc"
 source="https://bitbucket.org/hroptatyr/$pkgname/downloads/$pkgname-${pkgver}.tar.xz
@@ -16,7 +16,12 @@ builddir="$srcdir/$pkgname-$pkgver"
 build() {
 	cd "$builddir"
 	./configure \
+		--build=$CBUILD \
+		--host=$CHOST \
 		--prefix=/usr \
+		--sysconfdir=/etc \
+		--mandir=/usr/share/man \
+		--localstatedir=/var \
 		--enable-static=no
 	make
 }
@@ -24,8 +29,6 @@ build() {
 package() {
 	cd "$builddir"
 	make DESTDIR="$pkgdir" install
-	install -dm755 "$pkgdir/usr/share/licenses/$pkgname"
-	sed -n '/* Copyright/,/ DAMAGE.$/p' src/dadd.c > "$pkgdir"/usr/share/licenses/$pkgname/LICENSE
 }
 
 sha512sums="0210ad1f47aec77b8b87a520da9155430b52068e53733ef7bb26dfa10e8651f2190171537d4317adf888733e9377f961d5ed070efacd8ca18139225fa8c185ca  dateutils-0.4.3.tar.xz