I tried to test ./configure --without-lxc --without-remote.
First, the build failed with some odd errors, such as an
inability to build xen, or link failures for virNetTLSInit.
But when you think about it, once there is no remote code,
all of libvirtd is useless, any stateful driver that depends
on libvirtd is also not worth compiling, and any libraries
used only by RPC code are not needed.  So I patched
configure.ac to make for some saner defaults when an
explicit disable is attempted.  Similarly, since we have
migrated virnetdevbridge into generic code, the workaround
for Linux kernel stupidity must not depend on stateful
drivers being in use.

Then there's 'make check' that needs segregation.

Wow - quite a bit of cleanup to make --without-remote useful :)

* configure.ac: Let --without-remote toggle defaults on stateful
drivers and other libraries.  Pick up Linux kernel workarounds
even when qemu and lxc are not being compiled.
* tests/Makefile.am (test_programs): Factor out programs that
require remote.
* src/libvirt_private.syms (rpc/virnet*.h): Move...
* src/libvirt_remote.syms: ...into new file.
* src/Makefile.am (SYM_FILES): Ship new syms file.
Signed-off-by: NEric Blake <eblake@redhat.com>