* device/include/stdarg.h: changed SDCC specific keywords to double

* device/include/stdarg.h: changed SDCC specific keywords to double
  underlined form.
* device/include/stdint.h: changed intptr_t and uintptr_t for others than
  mcs51 and ds390.
* device/include/hc08/mc68hc908gp32.h,
* device/include/hc08/mc68hc908jb8.h,
* device/include/hc08/mc68hc908jkjl.h,
* device/include/hc08/mc68hc908qy.h: fixed comments
* device/include/mcs51/README: updated
* device/include/mcs51/c8051f120.h: added PINRSF
* device/lib/pic16/libc/stdlib/crc16.c: fixed comments
* src/pic16/pcode.c: MSVC6 doesn't accept declaring new variables
  amidst code. Also inline is not supported.

git-svn-id: https://sdcc.svn.sourceforge.net/svnroot/sdcc/trunk/sdcc@3721 4a8a32a2-be11-0410-ad9d-d568d2c75423