Add acpid package (#170)

Thanks craftyguy!

This commit adds the acpid daemon. This requires a kernel with NETLINK
support compiled in before daemon will run. acpid will be extremely
helpful for devices that have external buttons which need event
handling. The nokia-rx51 is full of such devices/switched!

This was heavily leveraged from the Arch Linux PKGBUILD, thank you Arch
maintainers/contributors!

acpid/APKBUILD

@@ -0,0 +1,24 @@
+pkgname=acpid
+pkgver=2.0.28
+pkgrel=1
+pkgdesc="A daemon for delivering ACPI power management events with netlink support"
+arch="all"
+url="http://sourceforge.net/projects/acpid2/"
+license="GPL"
+depends=""
+source="http://downloads.sourceforge.net/sourceforge/acpid2/$pkgname-$pkgver.tar.xz"
+subpackages="$pkgname-doc"
+
+build() {
+  ./configure --prefix=/usr --sbindir=/usr/bin --build=$CBUILD --host=$CHOST
+  make
+}
+
+package() {
+  cd $builddir
+  make DESTDIR="$pkgdir" install
+  # fix acpid rights
+  chmod 755 "$pkgdir/usr/bin/acpid"
+}
+
+sha512sums="effe9c3b30b4a6ea20eca4b36a06d4b3da9b262d100685958faec4b38f89377a87dcaecee7a69b87aaddfa47688bcc46fc47a38391ac4bd2019cb3b48ab18fcb  acpid-2.0.28.tar.xz"