build: ensure that package/host-build build system code does not run in parallel, fixes rare spurious parallel build failures

SVN-Revision: 33445

include/host-build.mk

@@ -136,6 +136,8 @@ define Host/Exports/Default
 endef
 Host/Exports=$(Host/Exports/Default)
 
+.NOTPARALLEL:
+
 ifndef DUMP
   define HostBuild
   $(if $(HOST_QUILT),$(Host/Quilt))

include/package.mk

@@ -248,6 +248,8 @@ Build/Install=$(if $(PKG_INSTALL),$(call Build/Install/Default,))
 Build/Dist=$(call Build/Dist/Default,)
 Build/DistCheck=$(call Build/DistCheck/Default,)
 
+.NOTPARALLEL:
+
 $(PACKAGE_DIR):
 	mkdir -p $@