minor cleanup of persistent reserve access test

Renamed helper function to not conflict with new
names, and cleaned up the include file list.
Added persistent reservation ownership tests.

Created tests for all persistent reservation types that
verifies reservation ownership based on reservation
type.
Merge pull request #59 from bonzini/master

usual bunch of autotools fixes
Makefile: Add two new headerfiles that are used for the test tools
Update README and mention iscsi-test-cu
New version 1.9.0

The main part of this release is the introduction of a new
CUnit based test tool for iscsi and scsi : iscsi-test-cu
This test tool will replace iscsi-test which will remain but will not
be expanded with any new tests.

Other changes include:
 - Add new CUnit based test tool: iscsi-test-cu to replace iscsi-test
 - Add tests for persistent reservation
 - Autotools updates
 - Add pkgconfig
MANPAGES: Add manpage for iscsi-ls
DOC: Add manpage for iscsi-inq
Add the manpage XML files to the distribution
SPEC: add the manpages and read16 command to the specfile
TESTS: Add tests for STARTSTOPUNIT
TESTS: Add tests for medium access commands when medium is ejected
TESTS: Add tests for prevent/allow medium removal
TESTS: Add test for PREVENTALLOWMEDIUMREMOVAL are cleared on lun/target reset
TEST: Add a test to verify PREVENT REMOVALs are seen across all nexuses
Add unmarshallers for READ*/VERIFY*/WRITE* cdb
TESTS: Add test for standard inquiry page
do not reconnect if reconnect is already defered

If the amount of reconnects is limited with iscsi_set_reconnect_max_retries()
it might happen that iscsi_reconnect is called while there is already a deferred
reconnect.

Signed-off-by: Peter Lieven <pl@kamp.de>
fix leak of iscsi_context in iscsi_reconnect

in case the maximum number of reconnects is limited with
iscsi_set_reconnect_max_retries() the an iscsi_context
is leaked if the limit is exhausted.

Signed-off-by: Peter Lieven <pl@kamp.de>
Add ASCQ codes related to thin-provisioning

Signed-off-by: Peter Lieven <pl@kamp.de>