beremiz

Added PLCID variable accessible from C side, set with binarie's MD5. Added retain init and cleanup calls. Extended tests/python to test PLCID
int CheckRetainBuffer(void)
{
return 1;
}
void ValidateRetainBuffer(void)
{
}
void InValidateRetainBuffer(void)
{
}
void Retain(unsigned int offset, unsigned int count, void *p)
{
}
void Remind(unsigned int offset, unsigned int count, void *p)
{
}