recipes: Switch away from S = WORKDIR

Where recipes use S = ${WORKDIR}, change them to set UNPACKDIR to
a subdir of WORKDIR and make S point at this instead.

I've chosen not to force S into any standard UNPACKDIR we may pick in
future just so the S = UNPACKDIR case is clearly visible by the
directory naming under WORKDIR as that should aid usability.

(From OE-Core rev: d9328e3b0b062f0621de3d114584b44f384a1c02)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-core/volatile-binds/volatile-binds.bb

@@ -9,7 +9,8 @@ SRC_URI = "\
     file://volatile-binds.service.in \
 "
 
-S = "${WORKDIR}"
+S = "${WORKDIR}/sources"
+UNPACKDIR = "${S}"
 
 inherit allarch systemd features_check
 
@@ -64,7 +65,6 @@ END
                "$var_lib_servicefile"
     fi
 }
-do_compile[dirs] = "${WORKDIR}"
 
 do_install () {
     install -d ${D}${base_sbindir}
@@ -82,4 +82,3 @@ do_install () {
     ln -s /dev/null ${D}${sysconfdir}/tmpfiles.d/etc.conf
     ln -s /dev/null ${D}${sysconfdir}/tmpfiles.d/home.conf
 }
-do_install[dirs] = "${WORKDIR}"