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Adds all spUtils functions.

Syntax: CALL spLoadFuncs

Example Code:

/* bootdrv.cmd (spUtils Example Code) */
/* The env variable specified as argument is set to the drive letter of */
/* the boot volume, or if called without parameter, writes it to stdout */
CALL RXFUNCADD 'spLoadFuncs','spUtils','spLoadFuncs'
CALL spLoadFuncs
PARSE ARG varname rest
IF varname= THEN SAY spGetBootdrive()
ELSE CALL VALUE varname,spGetBootdrive(),'OS2ENVIRONMENT'
CALL spDropFuncs