{pre,post}_configure stages are not run if build_style==gnu_makefile.
Change this to pre_build().
--HG--
extra : convert_revision : ca850119a0f1b90eb9cc4790107eeafbe6dab09b
Now every template uses its own directory. Patches, prepost* files
and other related stuff are stored there.
--HG--
extra : convert_revision : bbc529ef161d9a59fe13a1d54ac058f77ea05845