Windows: Add support to build as a DLL under windows

lib/libiscsi.def

@@ -0,0 +1,84 @@
+LIBRARY libiscsi
+EXPORTS
+iscsi_get_fd
+iscsi_which_events
+iscsi_service
+iscsi_queue_length
+iscsi_parse_full_url
+iscsi_destroy_url
+iscsi_parse_portal_url
+iscsi_get_error
+iscsi_create_context
+iscsi_destroy_context
+iscsi_set_alias
+iscsi_set_targetname
+iscsi_get_target_address
+iscsi_set_session_type
+iscsi_set_header_digest
+iscsi_set_initiator_username_pwd
+iscsi_is_logged_in
+iscsi_connect_async
+iscsi_connect_sync
+iscsi_full_connect_async
+iscsi_full_connect_sync
+iscsi_disconnect
+iscsi_login_async
+iscsi_login_sync
+iscsi_logout_async
+iscsi_logout_sync
+iscsi_discovery_async
+iscsi_nop_out_async
+iscsi_task_mgmt_async
+iscsi_task_mgmt_abort_task_async
+iscsi_task_mgmt_abort_task_set_async
+iscsi_task_mgmt_lun_reset_async
+iscsi_task_mgmt_target_warm_reset_async
+iscsi_task_mgmt_target_cold_reset_async
+iscsi_set_isid_oui
+iscsi_set_isid_en
+iscsi_set_isid_random
+iscsi_set_isid_reserved
+iscsi_scsi_command_async
+iscsi_reportluns_task
+iscsi_testunitready_task
+iscsi_inquiry_task
+iscsi_readcapacity10_task
+iscsi_synchronizecache10_task
+iscsi_read6_task
+iscsi_read10_task
+iscsi_write10_task
+iscsi_modesense6_task
+iscsi_scsi_command_sync
+iscsi_reportluns_sync
+iscsi_testunitready_sync
+iscsi_inquiry_sync
+iscsi_readcapacity10_sync
+iscsi_synchronizecache10_sync
+iscsi_read6_sync
+iscsi_read10_sync
+poll
+scsi_task_add_data_in_buffer
+scsi_sense_key_str
+scsi_sense_ascq_str
+scsi_free_scsi_task
+scsi_set_task_private_ptr
+scsi_get_task_private_ptr
+scsi_cdb_testunitready
+scsi_reportluns_cdb
+scsi_cdb_readcapacity10
+scsi_devtype_to_str
+scsi_version_to_str
+scsi_inquiry_pagecode_to_str
+scsi_cdb_inquiry
+scsi_protocol_identifier_to_str
+scsi_codeset_to_str
+scsi_association_to_str
+scsi_designator_type_to_str
+scsi_cdb_modesense6
+scsi_datain_getfullsize
+scsi_datain_unmarshall
+scsi_cdb_read6
+scsi_cdb_read10
+scsi_cdb_write10
+scsi_cdb_synchronizecache10
+