[patch] Fixes for new Lua 5.2-isms

[Daniel Miller <bonsaiviking () gmail com>]

List,

While debugging, I found a few errors due to using old names of library 
functions, like this one:
> ./nselib/rpc.lua:3365: attempt to call field 'mod' (a nil value)
> stack traceback:
>         ./nselib/rpc.lua:3365: in function 'CalcFillBytes'
>         ./nselib/rpc.lua:3052: in function 'unmarshall_vopaque'
>         ./nselib/rpc.lua:920: in function 'Export'
>         ./nselib/rpc.lua:2325: in function 'ShowMounts'
>         ./scripts/nfs-showmount.nse:42: in function 
> <./scripts/nfs-showmount.nse:37>
>         (...tail calls...)

So I went through the "Changes" sections of the Lua 5.2 and 5.1 manuals, 
and checked for obvious fixes. Here's the mini-changelog I ended up with:


    Fix math.mod (renamed to math.fmod in 5.1)
    Fix foreach (now use for loop over pairs)
    Replace string.gfind with string.gmatch (changed in 5.1)
    Rename unpack to table.unpack (only when necessary, due to 
bin.unpack, local unpack=table.unpack, etc. New in 5.2)
    %z in patterns deprecated for \0 (deprecated in 5.2)

I think some of these 5.1-isms were covered by LUA_COMPAT* defines in 
luaconf.h before the 5.2 change. Hopefully this patch will result in 
better results from here forward.

Dan

Attachment: luafixes.patch
Description:

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