MPH_total_num_exe - find total number of executables

This fuction returns the total number of executables.

REVISION HISTORY:

       2001-Nov-15 -- add PROTEX convention
       2001-May-20 -- first prototype

INTERFACE:

       integer function MPH_total_num_exe ()

USES:

       implicit none

OUTPUT PARAMETERS:

       ! total_num_exe

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