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PMS DLL 2.51  released on 24.07.2008
  * Module functionality not changed
  * uses new CVI RTE v.8.51 instead of v.7.0
  * some defines are changed in pms_def.h file for better compatibility 
       with other BH DLLs

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PMS DLL 2.5  released on 30.08.2005
  * DLL can now control up to 8 PMS modules

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PMS DLL 2.43  released on 14.04.2005
  * fixed - bug in initialisation for PMS-400 on some PC 
                     ( Windriver init error )

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PMS DLL 2.42  released on 08.03.2005
  * fixed - bug in PMS_read_data(events) for PMS-300

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PMS DLL 2.41  released on 28.04.2005
  * support for PMS-400A with FPGA v.D4 
       ( HW bug fixed for external Disable Count signal )

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PMS DLL 2.4  released on 14.05.2004
  * support for new PMS-400A module type added
  * fixed - for PMS-400 with FPGA v.C1 and bigger in Event mode - 
         - in some cases wrong number of events could be read after
            measurement was finished

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PMS DLL 2.31   released on 18.02.2003:
  * fixed : initialization of the PMS-400 modules placed in slots on different PCI busses
                        ( problem not visible in normal PC and/or one module only )

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PMS DLL 2.3   released on 17.01.2003:
  * support for fast hardware accumulation ,
       when using PMS-400 with  FPGA version >= 0x301 
       - new parameter SWEEPS, new function PMS_get_sweep
  * PMS_test_if_busy function recognizes the state when external hardware 
         disables the arming 

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PMS DLL 2.22   released on 05.03.2002:
  * fixed : PMS_fill_memory -  when low 16 bits of fill value not equal to
                                                                 high 16 bits
  * fixed : collect_time parameter not taken from .ini file ( default after initialisation )

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PMS DLL 2.21   released on 24.01.2002:
  * trigger test is added for PMS-400 modules 
        ( performed during PMS_test_counter)
  * trigger theshold test is added for PMS-400 modules 
        ( performed during PMS_test_dac)
  * pci_bus_no added in .ini file - enables using modules on different PCI busses
  * modules on the same PCI bus are ordered using serial number
      M0 - lowest serial number, M3 - highest serial number

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PMS DLL 2.2  released on 06.12.2001 :
  * Support for PMS-400 module added
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PMS DLL 2.11  :
  * fixed : event mode with overall collection time < 11 sec didn't work

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PMS DLL 2.1  :
  * Set of functions PMSstd_.. is added for using in Visual Basic 
        with _stdcall calling convention.
       The only difference beetween these functions and original set of functions
          is calling convention.
  * The order of PMSdata structure fields is changed to avoid data padding 
           when called in Visual Basic
  * fixed : module resources were disabled, when in computer BIOS 
                       the item  Plug & Play OS was set to YES  - only for modules
                        on PCI bus

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