[PATCH 0/2] xfstests: Automatic build dependencies

[Dave Chinner]

This patch series removes the need for 'make depend' by building the
dependencies as part of the normal build.

The first patch is cleaning up the current aclocal.m4 file and it's
generation as the second patch introduces a new configure test that
required regeneration.

The second patch is what changes the dependency calculation to use
gcc rather than makedepend and the makefile changes needed to build
and include those depencies automatically.