Make it possible to build in a separate directory
This patch allows you to do:
mkdir build
cd build
../configure ...
make
This will output all generated files to the build directory. Given that
autogen automatically runs configure, you can also do:
BUILDDIR=./build ./autogen.sh
which will do the right thing.
Also:
* Fix a dependency bug which means that guestfs_protocol.h
isn't automatically rebuilt.
* Re-running autogen.sh with no arguments won't blow away your previous
configure arguments.
22 files changed: