* device/include/pic16/{pic18f2480.h, pic18f2580.h, pic18f4423.h,

* device/include/pic16/{pic18f2480.h, pic18f2580.h, pic18f4423.h,
  pic18f4480.h, pic18f4523.h, pic18f4580.h, pic18f6585.h, pic18f8585.h},
  device/lib/pic16/libdev/{pic18f2480.c, pic18f2580.c, pic18f4423.c,
  pic18f4480.c, pic18f4523.c, pic18f4580.c, pic18f6585.c, pic18f8585.c}:
  added missing family members and 18f2480/2580/4480/4580 family
* device/include/pic16/{pic18f2423.h, pic18f2523.h}: use 18f4523.h
* device/include/pic16/pic18f2525.h: use 18f4620.h
* device/include/pic16/pic18f6680.h: use 18f8680.h
* device/include/pic16/pic18fregs.h,
  device/lib/pic16/pics.all,
  src/pic16/devices.inc: add new devices
* device/lib/pic16/libdev/{pic18f2423.c, pic18f2523.c}: use 18f4523.c
* device/lib/pic16/libdev/pic18f2525.c: use 18f4620.c
* device/lib/pic16/libdev/pic18f6680.c: uso 18f8680.c
* device/lib/pic16/libio/{adc.ignore, i2c.ignore, usart.ignore}:
  prevent attempting to build the libio for some new devices

git-svn-id: https://sdcc.svn.sourceforge.net/svnroot/sdcc/trunk/sdcc@5147 4a8a32a2-be11-0410-ad9d-d568d2c75423