Usage:  symmake [/m] /c CabName /d DDFHeader /i InfFile /o OutDir 
                /s CabSize /t SymbolPath
    /c cabname      Name to give the cabs
    /d DDFHeader    File with common DDF header formatting
    /i InfFile      File with list of symbol files to copy
    /m Merge        Merge the cabs into one cab
    /o OutDir       Directory to place DDF files and makefile
    /s CabSize      Number of files per cab
    /t SymPath      Root of the symbol tree (i.e., d:\binaries)
                    SymPath is ignored if the symbol path in InfFile
                    is already fully qualified.
    /x CabDest      Full destination path for the cabs
    /y InfDest      Full destination for the infs