* .version: bumped version number to 2.4.8

* .version: bumped version number to 2.4.8
* device/lib/pic16/pics.all: list of PIC18F devices supported by
pic16 port,
* device/lib/pic16/libio/i2c/: I2C module support library,
* device/include/pic16/i2c.h: I2C support library header,
* device/lib/pic16/libc/stdio/: standard IO support sources,
* (printf_small.c): printf_small() source, supports float print,
* (printf_tiny.c): printf_tiny() source, does not support floats,
* device/lib/pic16/Makefile.common.in: added OPT_FLAGS macro to
enable global optimizations for entire library source, other
Makefiles in the source tree are also modified to reflect this,
* device/lib/pic16/libc/stdlib/putchar.c (putchar): dummy putchar()
function,
* doc/sdccman.lyx: updated to reflect new changes,
* src/pic16/gen.c (aopForSym): don't handle sym->iaccess in
sym->onStack if-case,
* src/pic16/main.c (_pic16_keywords): commented out keywords bit,
sbit, idata, _idata, xdata, _xdata,
* added pragma library, to link an external library, (see doc),
* removed command line options, --pomit-config-words, --pomit-ivt,
--pleave-reset-vector,
* (pic16_finaliseOptions): when define macro SDCC_MODEL_{SMALL/LARGE}
when calling assembler to reflect memory model used, also define
macro STACK_MODEL_{SMALL/LARGE} when compiling and assembling to
reflect stack model used,
* src/pic16/ralloc.c (pic16_allocDirReg): when operand is allocated
on stack return NULL,

git-svn-id: https://sdcc.svn.sourceforge.net/svnroot/sdcc/trunk/sdcc@3648 4a8a32a2-be11-0410-ad9d-d568d2c75423