testing/tor: enable transparent proxy at build time

-Adds linux-headers as build dep. to enable transparent proxy
  support in tor as requested in bug #5664.
 -Minor clean up of APKBUILD file.

testing/tor/APKBUILD

@@ -2,15 +2,15 @@
 # Maintainer: Sam Dodrill <shadow.h511@gmail.com>
 pkgname=tor
 pkgver=0.2.7.6
-pkgrel=2
+pkgrel=3
 pkgdesc="Anonymous network connectivity"
 url="https://www.torproject.org"
 arch="all"
 license="BSD"
 pkgusers="tor"
 depends=""
-depends_dev="bash libevent-dev openssl-dev ca-certificates"
-makedepends="$depends_dev"
+depends_dev=""
+makedepends="linux-headers bash libevent-dev openssl-dev ca-certificates"
 install="$pkgname.pre-install"
 subpackages="$pkgname-doc"
 source="https://www.torproject.org/dist/$pkgname-$pkgver.tar.gz
@@ -18,19 +18,10 @@ source="https://www.torproject.org/dist/$pkgname-$pkgver.tar.gz
 	tor.confd
 	"
 
-_builddir="$srcdir/$pkgname-$pkgver"
-prepare() {
-	local i
-	cd "$_builddir"
-	for i in $source; do
-		case $i in
-		*.patch) msg $i; patch -p1 -i "$srcdir"/$i || return 1;;
-		esac
-	done
-}
+builddir="$srcdir/$pkgname-$pkgver"
 
 build() {
-	cd "$_builddir"
+	cd "$builddir"
 	./configure \
 		--build=$CBUILD \
 		--host=$CHOST \
@@ -39,12 +30,13 @@ build() {
 		--mandir=/usr/share/man \
 		--infodir=/usr/share/info \
 		--localstatedir=/var \
+                --enable-transparent \
 		|| return 1
 	make || return 1
 }
 
 package() {
-	cd "$_builddir"
+	cd "$builddir"
 	make DESTDIR="$pkgdir" install || return 1
 	mkdir -p "$pkgdir"/var/lib/$pkgname
 	mkdir -p "$pkgdir"/var/log/$pkgname