Extend procedure annotation in the .x file for stream handling.

Adds a missing remoteStreamRelease call to remoteDomainScreenshot
error path.

Several functions return values by reference parameters. This is realized
by passing the members of remote_CALL_ret by reference to the called
function.

The position of this parameters in the function signature follows some
patterns with some exceptions. This patterns and exceptions are hardcoded
in the generator.

Add an insert@<offset> annotation to the remote_CALL_ret struct members
for functions that return lists to remove some of the hardcoded patterns
and exceptions.

This allows to remove some special case code from the generator.

Add special case code for updating a given domain object instead of
returning a new one.

Replace $calls{$_} with $call in the dispatch bodies generator function.

No functional change included.

The on-the-wire protocol is identical; XDR guarantees that
both 'hyper' and 'unsigned hyper' are transmitted as 8 bytes.

* src/remote/remote_protocol.x (remote_get_version_ret)
(remote_get_lib_version_ret): Match public API.
* daemon/remote_generator.pl: Drop special case.
* src/remote_protocol-structs: Reflect updated type.

For virDomainDestroy and virDrvSupportsFeature.

Make procedure parsing more robust, by allowing arbitrary
amounts of whitespaces.

Also make some error messages more verbose.

The public API and RPC over-the-wire format have no flags argument,
so neither should the internal callback API.  This simplifies the
RPC generator.

* src/driver.h (virDrvNWFilterDefineXML): Drop argument that does
not match public API.
* src/nwfilter/nwfilter_driver.c (nwfilterDefine): Likewise.
* src/libvirt.c (virNWFilterDefineXML): Likewise.
* daemon/remote_generator.pl: Drop special case.

Anchor matches at the beginning of a line.

Specialize some general matches.

Add some comments to special cases.

Rename u_int and unsigned to unsigned int. This gets rid of some special
case code in the generator.

This matches the public API and helps to get rid of some special
case code in the remote generator.

Rename driver API functions and XDR protocol structs.

No functional change included outside of the remote generator.

In preparation for removing generated files, it is necessary
to tell automake that the generated files must be distributed
but not directly compiled (since they are included into the
body of a larger .c file that is compiled).  Hence, even though
these files are code and not headers in the strict sense of
the word, it is easier to rename them to .h for automake's sake.

* daemon/remote_client_bodies.c: Rename to .h.
* daemon/qemu_client_bodies.c: Likewise.
* src/remote/remote_client_bodies.c: Likewise.
* src/remote/qemu_client_bodies.c: Likewise.
* daemon/Makefile.am (remote_dispatch_bodies.c)
(qemu_dispatch_bodies.c): Rename to .h.
(remote.c, EXTRA_DIST): Reflect rename.
* daemon/remote.c: Likewise.
* daemon/remote_generator.pl: Likewise.
* src/Makefile.am (remote/remote_driver.c): Likewise.
* src/remote/remote_driver.c: Likewise.
* po/POTFILES.in: Likewise.
* cfg.mk (exclude_file_name_regexp--sc_require_config_h)
(exclude_file_name_regexp--sc_require_config_h_first)
(exclude_file_name_regexp--sc_prohibit_empty_lines_at_EOF):
Likewise.

This adds length checks to all affected functions.

Rename remoteSecretListSecrets to remoteListSecrets to match the normal
naming pattern.

Once again rename members in the XDR definitions to avoid special case
code in the generator.

They require additional special cases.

This covers functions that return single wrapped objects and don't
involve complexer code in the body.

Again this will simplify the generator, due to less special case handling.

This simplifies the remote protocol code generator.

Also rename 'ret' to 'result' to resolve a naming conflict in the
generator.

This patch just covers the simple functions without explicit return
values. There is more to be handled.

The generator collects the members of the XDR argument structs and uses
this information to generate the function bodies.

Exclude the generated files from offending syntax-checks.

Suggested by Richard W.M. Jones

No functional change included, just a whitespace change.