Add check for the mqseries version

Add a new check in the configure script that will ensure the v7 of
mqseries is installed in order to compile safely the new functions
of the mqseries API
Fix CS
Add the list of function to be implemented as part of MQIC7
Add usefull doc for code maintenance
Add a first untested version of mqseries_sub
Code cleaning for mqseries_bytes

- better function naming s/make_reference/create_mqseries_bytes_resource/g
- replace hardcoded size by sizeof construct
Code cleaning
Dev
Fix problem with the WaitInterval and buflen
Fix the length of data retrieved from the buffer
Make sure the hObj param of mqseries_sub is INPUT/OUTPUT
Update MQCD and MQPMO
Update MQMD
Update MQGMO
Update constants
Improve macro
Add mqseries_stat function
Code cleaning

- Add a new file mqseries_helper.c with all helper/convertion functions
- Change convertion function name to something more implicit and easy to remember
- Prefix all "private" functions of this extension by _mqseries_
Add MQSERIES_UNSUPPORTED_VERSION macro
Update documentation and add _mqseries_set_mqbo_from_array