xbps-src: set wrksrc to $pkgname-$version unconditionally

Manual.md

@@ -512,8 +512,7 @@ can be specified by prepending a commercial at (@).
 For tarballs you can find the contents checksum by using the command
 `tar xf <tarball.ext> --to-stdout | sha256sum`.
 
-- `wrksrc` The directory name where the package sources are extracted, by default
+- `wrksrc` The directory name where the package sources are extracted, set to `${pkgname}-${version}`.
-set to `${pkgname}-${version}`. If the top level directory of a package's `distfile` is different from the default, `wrksrc` must be set to the top level directory name inside the archive.
 
 - `build_wrksrc` A directory relative to `${wrksrc}` that will be used when building the package.
 

common/build-style/slashpackage.sh

@@ -5,7 +5,6 @@
 # required variables
 #
 #   build_style=slashpackage
-#   wrksrc=<category>
 #   build_wrksrc=${pkgname}-${version}
 #   distfiles=<download link>
 # 
@@ -15,7 +14,6 @@
 #   pkgname=daemontools
 #   version=0.76
 #   revision=1
-#   wrksrc=admin
 #   build_wrksrc=${pkgname}-${version}
 #   build_style=slashpackage
 #   short_desc="A collection of tools for managing UNIX services"

common/xbps-src/shutils/common.sh

@@ -655,11 +655,7 @@ setup_pkg() {
     fi
 
     # Setup some specific package vars.
-    if [ -z "$wrksrc" ]; then
+    wrksrc="$XBPS_BUILDDIR/${sourcepkg}-${version}"
-        wrksrc="$XBPS_BUILDDIR/${sourcepkg}-${version}"
-    else
-        wrksrc="$XBPS_BUILDDIR/$wrksrc"
-    fi
 
     if [ "$cross" -a "$nocross" ]; then
         report_broken \