fast modutils

[dronnikov at gmail.com]

Just realized that the problem of unaligned access to the data in modules.dep.bb can be solved at once by padding the records using:
size := (size + (4-1)) / 4 * 4,
where size is the size of the record, 4 is sizeof(uint32_t).

Attached is the patch for fast modutils.

Please, comment and consider applying.

TIA,
--
Vladimir
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