GCBASIC Code

Fixed bug on PIC 18F - strings with double quotes or backslashes were causing invalid assembly

Fixed AVR assembler bug - lds and sts instructions were accessing the wrong location when used to access one of the first 63 IO registers
New chip data files for mega32u4 and mega16u4 chips

Compiler bugfixes for recently introduced errors:
- Fix for register bug on AVR - compiler was not recognising which registers could have literals loaded directly, and was loading into another register temporary first.
- Fix for bit variable bug when Not operator used in condition
- Fix for high bytes disappearing from the result of any calculations in brackets

Fix for bug when accessing elements after position 255 of an array using a variable on PIC 18F

Fixed compiler bugs:
- Calculations like wordvar = 100 + 200 + 100 now performed correctly. The first addition was performed based on the type of the input values, not the output variable as it should have been.
- ReadTable bug fixed. When the table position was given by a word variable declared outside of the main routine, the high byte of the position was ignored.

Minor GCGB changes:
- Now uses F chip data file if file for PIC 1xLFxxx chip is missing
- Fixed bug which created invalid variables when variables created from Parameter Editor window

Changes to stdbasic.h after recent compiler improvements.
Removed AVR versions of FnEQUBit and FnNOTBit, previous PIC-only versions now compile correctly for both chip families.
Comments added that SetWith, FnEQUBit and FnNOTBit should now be replaced by built-in compiler operations. Sensitive pins can be marked as volatile, and native assignment operators will set without glitching, replacing SetWith. Bits are now correctly handled by built-in Not operator.

Fixes for #option explicit. Compiler no longer generates incorrect error messages for subroutine parameters or some condition checks.

Compiler improvements:
- Bit functions now allowed
- Not operator now works with bit variables

PIC chip data updated. New chips added, some errors corrected, and most LF files removed.