Log Message:
Update gputils to 0.13.4, OK'd by Tom Spindler.
CHANGES:
 [gputils] Updated header files and linker scripts.
 {gputils] Fixed UPPER to mask with 0xff instead of 0x3f.
 [gpasm] Mask MOVLB with 0xf instead of 0xff.
 [gpasm] Fixed default access bit for extended pic16e.
 [gpasm] Fixed 18xx config bug when config the last section.
 [gputils] Fixed bsr boundary for 18f2455/2550/4455/4550.
 [gplib] Allow forward and back slashes as directory delimiters.