* device/include/pic/pic16f88.h: added RA6 and RA7

* device/include/pic/pic16f88.h: added RA6 and RA7
* device/lib/pic/libdev/disabled_pic16f886.c,
* device/lib/pic/libdev/disabled_pic16f887.c: renamed and enabled

* src/pic16/devices.inc,
* device/include/pic16/pic18f2423.h,
* device/include/pic16/pic18f2523.h,
* device/include/pic16/pic18fregs.h,
* device/lib/pic16/pics.all
* device/lib/pic16/libdev/pic18f2423.c,
* device/lib/pic16/libdev/pic18f2523.c: added 18f2423 and 18f2523
* device/lib/pic16/libio/i2c.ignore,
* device/lib/pic16/libio/usart.ignore,
* device/lib/pic16/libio/adc.ignore: ignore new devices

git-svn-id: https://sdcc.svn.sourceforge.net/svnroot/sdcc/trunk/sdcc@5000 4a8a32a2-be11-0410-ad9d-d568d2c75423