Migrating PIC16F876a to PIC18F252

[T.Jackson]

Suggest upgrading to the current version 2.47 ...

<h4> A Glimpse at What Version 2.44 Offered / Corrected</h4>
<ul>
<li> Adds support for PIC16F54, 57, PIC18F2439, 2539, 4439, 4539, 6520, 6525, 6585, 6621, 6680, 8520, 8525, 8585, 8621 and 8680.</li>
<li> Adds REPEAT..UNTIL.</li>
<li> Adds 9 bit parity to HSERIN, HSERIN2, HSEROUT and HSEROUT2.</li>
<li> Changes PIC18Fxxxx DATA and EEPROM to allow odd locations.</li>
<li> Fixes constant folding for large numbers.</li>
<li> Fixes unable to load COD file for MPLAB 6.</li>
<li> Fixes parity with timeout in serial instructions.</li>
<li> Fixes PIC18Xxxxx DEBUGIN modifier timeout.</li>
<li> Fixes PIC18Xxxxx SERIN2 DEC modifier timeout.</li>
<li> Fixes PIC18F1220 and 1320 configuration error.</li>
<li> Fixes PIC18F6620, 6720, 8620 and 8720 BANK12 RAM setting.</li>
</ul>