crypsetup: add pwquality option (off) and switch to the openssl crypto backend.

- pwquality is disabled because otherwise needs the cracklib dictionaries.
- openssl crypto backend is used rather than libgcrypt to avoid extra deps.

srcpkgs/cryptsetup/template

@@ -1,11 +1,11 @@
 # Template file for 'cryptsetup'
 pkgname=cryptsetup
 version=1.6.6
-revision=1
+revision=2
 build_style=gnu-configure
-configure_args="--enable-pwquality"
+configure_args="--with-crypto_backend=openssl"
 hostmakedepends="pkg-config"
-makedepends="popt-devel libuuid-devel device-mapper-devel libgcrypt-devel libpwquality-devel"
+makedepends="popt-devel libuuid-devel device-mapper-devel libressl-devel"
 short_desc="Setup virtual encryption devices under dm-crypt Linux"
 maintainer="Juan RP <xtraeme@gmail.com>"
 license="GPL-3"
@@ -13,6 +13,16 @@ homepage="http://code.google.com/p/cryptsetup"
 distfiles="https://www.kernel.org/pub/linux/utils/cryptsetup/v1.6/${pkgname}-${version}.tar.xz"
 checksum=2d2ce28e4e1137dd599d87884b62ef6dbf14fd7848b2a2bf7d61cf125fbd8e6f
 
+build_options="pwquality"
+desc_option_pwquality="Enable support for checking password quality via libpwquality"
+
+if [ "$build_option_pwquality" ]; then
+	configure_args+=" --enable-pwquality"
+	makedepends+=" libpwquality-devel"
+else
+	configure_args+=" --disable-pwquality"
+fi
+
 libcryptsetup_package() {
 	short_desc+=" - runtime libraries"
 	pkg_install() {