fix many compilation warnings about static variables used by non-static functions

[CC] plc_main.c -> plc_main.o
/tmp/be/build/plc_main.c:396:40: warning: ?LogBuff? is static but used in inline function ?copy_from_log? which is not static
memcpy((char*)buf + remaining, LogBuff[level], size - remaining);
^
/tmp/be/build/plc_main.c:395:22: warning: ?LogBuff? is static but used in inline function ?copy_from_log? which is not static
memcpy(buf, &LogBuff[level][buffpos], remaining);
^
...

^
/tmp/be/build/plc_debugger.c:825:20: warning: ?retain_offset? is static but used in inline function ?BufferIterator? which is not static
Retain(retain_offset, size, real_value_p);
^
/tmp/be/build/plc_debugger.c:823:47: warning: ?retain_offset? is static but used in inline function ?BufferIterator? which is not static
unsigned int next_retain_offset = retain_offset + size;
^
^

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#!/usr/bin/env python

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# -*- coding: utf-8 -*-

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import os 

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import wx

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# Get the default language

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langid = wx.LANGUAGE_DEFAULT

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# Define locale for wx

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locale = wx.Locale(langid)

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def GetDomain(path):

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    for name in os.listdir(path):

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        filepath = os.path.join(path, name)

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        basename, fileext = os.path.splitext(name)

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        if os.path.isdir(filepath):

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            result = GetDomain(filepath)

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            if result is not None:

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                return result

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        elif fileext == ".mo":

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            return basename

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    return None

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def AddCatalog(locale_dir):

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    if os.path.exists(locale_dir) and os.path.isdir(locale_dir):

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        domain = GetDomain(locale_dir)

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        if domain is not None:

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            locale.AddCatalogLookupPathPrefix(locale_dir)

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            locale.AddCatalog(domain)