[crossfire] Suspicious code

[Nicolas Weeger]

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      * in common/readable.c, line 1647:
     
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      	op_name = strtok (formula->arch_name, ",");
     
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      Trouble: arch_name is set through add_string, and strtok *changes* the
     
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      string.
     
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      Given the context it's used only when the 'arch' field of the recipe
     
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      contains , (recipe given multiple items randomly, i guess?). But this
     
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      could lead to formulae corruption.
     
     
Fixed, also fixed same issue in recipe.c (in formulae dumping code).

Nicolas