So far the temp dir has been based on the current value of $ENV{TEMP}. What if
we want the temp dir to be some specific place for our application, regardless
of system values ?

        C:\Par>set PAR_GLOBAL_TEMP=c:\Par\temp

        C:\Par>demo.exe a b c
        My basename is demo
        $0 = C:\Par\demo.exe
        My args are: a b c
        My @INC is: c:\Par\temp/inc/lib c:\Par\temp/inc CODE(0xdb2718) .

        I am a PAR package
        I am a binary file
        I am running as '$0 @ARGV'
                C:\Par\demo.exe a b c

        My temp dir is
                c:\Par\temp
                and it will NOT be deleted after the script finishes
        A copy of this script was extracted as
                C:\Par\temp\d2f130a4.pl

        PAR environment:
        PAR_0=C:\Par\temp\d2f130a4.pl
        PAR_ARGC=4
        PAR_ARGV_0=demo.exe
        PAR_ARGV_1=a
        PAR_ARGV_2=b
        PAR_ARGV_3=c
        PAR_GLOBAL_CLEAN=1
        PAR_GLOBAL_TEMP=c:\Par\temp
        PAR_INITIALIZED=2
        PAR_PROGNAME=C:\Par\demo.exe
        PAR_SPAWNED=1
        PAR_TEMP=c:\Par\temp

        C:\Par>

PAR_TEMP is set to PAR_GLOBAL_TEMP, but PAR_GLOBAL_CLEAN is overidden. If you
chose a fixed temp dir, you also clean up after yourself. There is currently
no way to define a fixed temp dir inside the PAR package, and since temp dir
creation is done before the script runs, PAR_GLOBAL_TEMP must be set before
running the PAR package.