xbps-src: improve PREFER_BINPKG_DEPS, take 2.

When installing pkgdeps from repositories more errno values are handled
from xbps-bin, this help us to find why a package failed to install.

Also stdout/stderr output from xbps-bin is redirected to
$wrksrc/.xbps_install_dependency_$pkgdepname.log to see how it was
installed or why it failed to install.

Do autoremove packages in more places to be sure that if something went
wrong those packages are always removed.

xbps-src/shutils/pkgtarget_funcs.sh.in

@@ -167,27 +167,9 @@ install_pkg()
 		remove_tmpl_wrksrc $wrksrc
 	fi
 
-	#
-	# If XBPS_PREFER_BINPKG_DEPS is set, we should remove those
-	# package dependencies installed by the target package, do it.
-	#
-	if [ -n "$XBPS_PREFER_BINPKG_DEPS" -a -z "$doing_deps" ]; then
-		msg_normal "Removing binary package dependencies...\n"
-		${fakeroot_cmd} ${fakeroot_cmd_args} \
-			${XBPS_BIN_CMD} -Rpyf autoremove
-	fi
-	return $?
-}
+	. ${XBPS_SHUTILSDIR}/builddep_funcs.sh
+	autoremove_binpkgs
 
-#
-# Installs a pkg by installing a binary package from
-# repository pool, matching the pkg pattern.
-#
-install_pkg_with_binpkg()
-{
-	msg_normal "'$pkgname': installing dependency '$1'\n"
-	${fakeroot_cmd} ${fakeroot_cmd_args} ${XBPS_BIN_CMD} \
-		-Ay install "\"${1}\""
 	return $?
 }
 
@@ -216,10 +198,6 @@ remove_pkg()
 	[ -z $pkgname ] && msg_error "unexistent package, aborting.\n"
 
 	ver=$($XBPS_PKGDB_CMD version $pkgname)
-	if [ -z "$ver" ]; then
-		msg_warn "$pkgname is not installed.\n"
-	fi
-
 	. $XBPS_SHUTILSDIR/stow_funcs.sh
 	stow_pkg_handler unstow || return $?
 
@@ -237,9 +215,9 @@ remove_pkg()
 		rm -rf "$XBPS_DESTDIR/${pkgname}-${ver%_*}"
 	fi
 
-	rm -f $XBPS_PRE_INSTALL_DONE
-	rm -f $XBPS_POST_INSTALL_DONE
-	rm -f $XBPS_INSTALL_DONE
+	[ -f $XBPS_PRE_INSTALL_DONE ] && rm -f $XBPS_PRE_INSTALL_DONE
+	[ -f $XBPS_POST_INSTALL_DONE ] && rm -f $XBPS_POST_INSTALL_DONE
+	[ -f $XBPS_INSTALL_DONE ] && rm -f $XBPS_INSTALL_DONE
 
 	return $?
 }