Fix backtrace on printing localized (non-ascii) error message in PLCGenerator.

traceback:
File "C:\Beremiz\targets\st\beremiz\..\..\..\beremiz\beremiz\BeremizIDE.py", line 811, in OnMenu
getattr(self.CTR, method)()
File "C:\Beremiz\targets\st\beremiz\..\..\..\beremiz\beremiz\ProjectController.py", line 1134, in _Build
IECGenRes = self._Generate_SoftPLC()
File "C:\Beremiz\targets\st\beremiz\..\..\..\beremiz\beremiz\ProjectController.py", line 746, in _Generate_SoftPLC
if self._Generate_PLC_ST():
File "C:\Beremiz\targets\st\beremiz\..\..\..\beremiz\beremiz\ProjectController.py", line 763, in _Generate_PLC_ST
self._getIECgeneratedcodepath())
File "C:\Beremiz\targets\st\beremiz\..\..\..\beremiz\beremiz\PLCControler.py", line 466, in GenerateProgram
errors.append(str(ex))
<type 'exceptions.UnicodeEncodeError'>: 'ascii' codec can't encode characters in position 0-9: ordinal not in range(128)
Fix backtrace on printing localized (non-ascii) error message in PLCGenerator.

traceback:
File "C:\Beremiz\targets\st\beremiz\..\..\..\beremiz\beremiz\BeremizIDE.py", line 811, in OnMenu
getattr(self.CTR, method)()
File "C:\Beremiz\targets\st\beremiz\..\..\..\beremiz\beremiz\ProjectController.py", line 1134, in _Build
IECGenRes = self._Generate_SoftPLC()
File "C:\Beremiz\targets\st\beremiz\..\..\..\beremiz\beremiz\ProjectController.py", line 746, in _Generate_SoftPLC
if self._Generate_PLC_ST():
File "C:\Beremiz\targets\st\beremiz\..\..\..\beremiz\beremiz\ProjectController.py", line 763, in _Generate_PLC_ST
self._getIECgeneratedcodepath())
File "C:\Beremiz\targets\st\beremiz\..\..\..\beremiz\beremiz\PLCControler.py", line 466, in GenerateProgram
errors.append(str(ex))
<type 'exceptions.UnicodeEncodeError'>: 'ascii' codec can't encode characters in position 0-9: ordinal not in range(128)


Close #67

#ifndef _BEREMIZ_H_
#define _BEREMIZ_H_

/* Beremiz' header file for use by extensions */

#include "iec_types.h"

#define LOG_LEVELS 4
#define LOG_CRITICAL 0
#define LOG_WARNING 1
#define LOG_INFO 2
#define LOG_DEBUG 3

extern unsigned long long common_ticktime__;

#ifdef TARGET_LOGGING_DISABLE
static inline int LogMessage(uint8_t level, char* buf, uint32_t size)
{
	(void)level;
	(void)buf;
	(void)size;
	return 0;
}
#else
int     LogMessage(uint8_t level, char* buf, uint32_t size);
#endif

long AtomicCompareExchange(long* atomicvar,long compared, long exchange);

#endif