rdedup: update to 3.2.1.

removes the need for patched/backported bindgen

srcpkgs/rdedup/patches/bindgen-cross.patch

@@ -1,12 +0,0 @@
-patch bindgen to use BINDGEN_EXTRA_CLANG_ARGS variable to set sysroot for cross builds
-https://github.com/jnbr/rust-bindgen/tree/0.37.4-clang_args
-
---- a/Cargo.toml	2019-06-15 13:18:05.509893680 +0200
-+++ b/Cargo.toml	2019-06-15 13:19:48.854887006 +0200
-@@ -53,3 +53,6 @@
- slog-term = "2"
- slog-async = "2"
- url = "1"
-+
-+[patch.crates-io]
-+bindgen = {git = 'https://github.com/jnbr/rust-bindgen', rev = '4afb05213b3e7e0ec928b84ea85d9f2b99477586'}

srcpkgs/rdedup/template

@@ -1,25 +1,14 @@
 # Template file for 'rdedup'
 pkgname=rdedup
-version=3.1.1
-revision=6
-wrksrc=rdedup-rdedup-v${version}
+version=3.2.1
+revision=1
 build_style=cargo
+build_helper=rust
 hostmakedepends="pkg-config clang"
 makedepends="openssl-devel liblzma-devel libsodium-devel"
 short_desc="Data deduplication engine"
 maintainer="Orphaned <orphan@voidlinux.org>"
 license="MPL-2.0"
 homepage="https://github.com/dpc/rdedup"
-distfiles="https://github.com/dpc/rdedup/archive/rdedup-v${version}.tar.gz"
-checksum=5e7c09c40897cd2f2635e8c213c2ff0f5c4d7ceccbd22980cd4cb0a16f3dfc28
-
-if [ "$CROSS_BUILD" ]; then
-	export HOST_CC="$BUILD_CC"
-	export HOST_CFLAGS="$BUILD_CFLAGS"
-	export BINDGEN_EXTRA_CLANG_ARGS="--sysroot=${XBPS_CROSS_BASE}"
-fi
-
-pre_build() {
-	cargo update --package openssl-sys --precise 0.9.58
-	cargo update --package openssl --precise 0.10.22
-}
+distfiles="https://github.com/dpc/rdedup/archive/v${version}.tar.gz"
+checksum=023b5576f30ebf75c1740dd244ac13b6ef3ad7f6d4a6ab6654e12130201eb923