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;
^
^

     1

from weakref import ref

     2

     3

class POULibrary:

     4

    def __init__(self, CTR, LibName, TypeStack):

     5

        from PLCControler import PLCControler

     6

        self.CTR = ref(CTR)

     7

        self.LibName = LibName

     8

        self.LibraryControler = PLCControler()

     9

        self.LibraryControler.OpenXMLFile(self.GetLibraryPath())

    10

        self.LibraryControler.ClearConfNodeTypes()

    11

        self.LibraryControler.AddConfNodeTypesList(TypeStack)

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        self.program = None;

    13

    14

    def GetSTCode(self):

    15

        if not self.program:

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            self.program = self.LibraryControler.GenerateProgram()[0]+"\n"

    17

        return self.program 

    18

    19

    def GetName(self):

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        return self.LibName

    21

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    def GetCTR(self):

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        return self.CTR()

    24

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    def GetTypes(self):

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        return {"name" : self.GetName(), "types": self.LibraryControler.Project}

    27

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    def GetLibraryPath(self):

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        raise Exception("Not implemented")

    30

    31

    def Generate_C(self, buildpath, varlist, IECCFLAGS):

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        # Pure python or IEC libs doesn't produce C code

    33

        return ((""), [], False), ""