musepack: add x86{,_64} to libcuefile, libreplaygain and musepack_tools.

* Add x86 and x86_64 to ARCHITECTURES as the recipe also works fine for these.
* Add x86_gcc2 to SECONDARY_ARCHITECTURES for use in x86 (gcc4) hybrid.
* Use $portVersion instead of the current version in SOURCE_{URI,DIR}.
* Drop the "r" prefix in version (r475 → 475) and ajust SOURCE_{URI,DIR}.

media-sound/musepack_tools/musepack_tools-475.recipe

@@ -3,17 +3,18 @@ DESCRIPTION="Musepack or MPC is an open source lossy audio codec, specifically \
 optimized for transparent compression of stereo audio at bitrates of 160-180 \
 (manual set allows bitrates up to 320) kbit/s. It was formerly known as \
 MPEGplus, MPEG+ or MP+."
-HOMEPAGE="https://www.musepack.net"
+HOMEPAGE="https://www.musepack.net/"
 COPYRIGHT="1997-2011  Andree Buschmann, Frank Klemm"
 LICENSE="BSD (3-clause)
 	GNU LGPL v2.1"
 REVISION="1"
-SOURCE_URI="http://files.musepack.net/source/musepack_src_r475.tar.gz"
-SOURCE_DIR="musepack_src_r475"
-PATCHES="musepack_tools-r475.patchset"
+SOURCE_URI="http://files.musepack.net/source/musepack_src_r$portVersion.tar.gz"
+CHECKSUM_SHA256="a4b1742f997f83e1056142d556a8c20845ba764b70365ff9ccf2e3f81c427b2b"
+SOURCE_DIR="musepack_src_r$portVersion"
+PATCHES="musepack_tools-$portVersion.patchset"
 
-ARCHITECTURES="x86_gcc2"
-SECONDARY_ARCHITECTURES="x86"
+ARCHITECTURES="x86_gcc2 x86 x86_64"
+SECONDARY_ARCHITECTURES="x86_gcc2 x86"
 
 PROVIDES="
 	musepack_tools$secondaryArchSuffix = $portVersion