Add .NOTPARALLEL to generated Makefile.

We don't want to add unnatural dependencies for patches, if for example both
patch A and B modify the same file, but the order of applying the patches doesn't
matter. Adding a dependency would cause trouble when excluding patches.

debian/tools/patchupdate.py

@@ -224,6 +224,8 @@ def generate_makefile(patches, fp):
     fp.write("abort:\n")
     fp.write("\trm -f *.ok\n")
     fp.write("\n")
+    fp.write(".NOTPARALLEL:\n")
+    fp.write("\n")
 
     for i, patch in patches.iteritems():
         fp.write("# Patchset %s\n" % patch.name)

patches/Makefile

@@ -34,6 +34,8 @@ install: $(PATCHLIST)
 abort:
 	rm -f *.ok
 
+.NOTPARALLEL:
+
 # Patchset 00-Commandline
 # |
 # | Included patches: