The finalized version of it has already been merged in master:
commit 42eaadf9b117768814796728c8bef23009d9a52a
Merge: 5fe99e2 ca41efd
Author: Stefano Lattarini <stefano.lattar...@gmail.com>
Date: Sat May 18 20:28:20 2013 +0200
Merge branch 'subdir-objects-work'
* subdir-objects-work:
depend: reduce code duplication, de-uglify make verbose output
depend: prefer $(...) over `...` in Cygwin-specific recipes
depend: reduce code duplication
depend: a preparatory refactoring
depend: refactor and remove code duplication
Automake::Language: drop unused fields 'compile_flag' and 'output_flag'
depend: assume '-c' compiler flag always means to produce object files
depend: assume we can always pass '-o' to the C compiler
cleanup: having subdir-objects mandatory allow us some simplifications
subdir-objects: enable unconditionally
