main/tcpdump: rebuild to fix install_if for -doc subpackage

Also cleanup the APKBUILD a bit.

main/tcpdump/APKBUILD

@@ -1,7 +1,7 @@
 # Maintainer: Natanael Copa <ncopa@alpinelinux.org>
 pkgname=tcpdump
 pkgver=4.7.4
-pkgrel=0
+pkgrel=1
 pkgdesc="A tool for network monitoring and data acquisition"
 url="http://www.tcpdump.org"
 arch="all"
@@ -11,28 +11,28 @@ makedepends="libpcap-dev openssl-dev perl"
 subpackages="$pkgname-doc"
 source="http://www.$pkgname.org/release/$pkgname-$pkgver.tar.gz"
 
-_builddir="$srcdir"/$pkgname-$pkgver
-
+builddir="$srcdir"/$pkgname-$pkgver
 prepare() {
-	cd "$_builddir"
+	cd "$builddir"
 	update_config_sub || return 1
 }
 
 build () {
-	cd "$_builddir"
+	cd "$builddir"
 	./configure \
 		--build=$CBUILD \
 		--host=$CHOST \
 		--prefix=/usr \
+		--sysconfdir=/etc \
 		--mandir=/usr/share/man \
+		--localstatedir=/var \
 		--enable-ipv6 \
 		|| return 1
 	make || return 1
-#	make check || return 1
 }
 
 package() {
-	cd "$_builddir"
+	cd "$builddir"
 	make DESTDIR="$pkgdir" install || return 1
 	rm -f "$pkgdir"/usr/sbin/tcpdump.4*
 }