use pregenerated CRC32 lookup tables for retain on Win32 and GNU/Linux

This code could be possible reused on low-end targets with limited RAM.

code to generate lookup table:
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/* CRC lookup table and initial state. */
uint32_t crc32_table[256];

/* Generate CRC32 lookup table. */
void GenerateCRC32Table(void)
{
unsigned int i, j;
/* Use CRC-32-IEEE 802.3 polynomial 0x04C11DB7 (bit reflected). */
uint32_t poly = 0xEDB88320;

for (i = 0; i <= 0xFF; i++)
{
uint32_t c = i;
for (j = 0 ; j < 8 ; j++)
c = (c & 1) ? (c >> 1 ) ^ poly : (c >> 1);
crc32_table[i] = c;
}
}

void main(void)
{
GenerateCRC32Table();
int j=0;
for(int i=0; i<256; i++) {
printf("0x%08X, ", crc32_table[i]);
if (++j >= 8) {
j = 0;
printf("\n");
}
}
}
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     1

#Encoding of BACnet Object Types;;;

     2

#Code;Object Type;;

     3

0;Analog Input;;

     4

1;Analog Output;;

     5

2;Analog Value;;

     6

3;Binary Input ;;

     7

4;Binary Output;;

     8

5;Binary Value;;

     9

6;Calendar;;

    10

7;Command;;

    11

8;Device;;

    12

9;Event-Enrollment;;

    13

10;File;;

    14

11;Group;;

    15

12;Loop;;

    16

13;Multistate Input;;

    17

14;Multistate Output

    18

15;Notification Class

    19

16;Program

    20

17;Schedule

    21

18;Averaging

    22

19;Multistate Value

    23

20;Trend Log

    24

21;Life Safety Point

    25

22;Life Safety Zone

    26

23;Accumulator

    27

24;Pulse Converter