Prevent RAWIDSET_push_guid_glob from crashing when last_glob_idset remains uninitialized
after initial call to RAWIDSET_find_by_GUID.
Merge pull request #107 from openchange/jkerihuel/fix-RAWIDSET_push_guid_glob

Fix potential crash in RAWIDSET_push_guid_glob
pymapistore: add message_get_properties and message_set_properties
pymapistore: set default behaviour for input flags
pymapistore: use talloc_zero_array instead of talloc_array + memset
pymapistore: extra OOM checks + "goto end" shortcuts
pymapistore: use PyDict_Next instead of iterating over a list with the keys
pymapistore: change property tag functions to other that map errors as well
pymapistore: more space in command line output in test script
pymapistore: OOM and error check in  list_backends_for_user
pymapistore: add get_message_data method
pymapistore: add save_message method
pymapistore: modify message creation flag exposure
pymapistore: correct typos
pymapistore: Add MAPIStore Table implementation (open_table, get_row, set_columns & get_row_count)
pymapistore: include "goto end;" declarations
pymapistore: rearrange variable delcarations into something consistent
pymapistore: correct integer arguments' types
pymapistore: correct returned type in msg.mid and fld.fid
pymapistore: Add MAPIStore Message open_attachment_table and get_attachment_count