* src/port.h (PORT structure): added hook initPaths, now each

* src/port.h (PORT structure): added hook initPaths, now each
port can declare its own default search paths,
which can been seen with the --print-search-dirs option,
see pic16 port for example,
* src/SDCCmain.c (setBinPaths, setIncludePaths, setLibPath,
setDataPaths): test to options.printSearchDirs is ifdef'ed out,
* (doPrintSearchDirs): NEW, replaces in a central manner the
printing of search dirs which was split in set*Paths functions,
* (main): added call to port->initPaths and doPrintSearchDirs,
* src/avr/main.c,
* src/ds390/main.c,
* src/hc08/main.c,
* src/izt/i186.c,
* src/izt/tlcs900h.c,
* src/mcs51/main.c,
* src/pic/main.c,
* src/pic16/main.c: modified port structures to reflect addition of
initPaths hook,

* src/pic16/device.c (regCompare): registers are finally sorted by name,
* (pic16_dump_section): for registers in same address reserve memory once,
* src/pic16/device.h (struct PIC16_device): changed variable gen_banksel
to no_banksel,
* src/pic16/genarith.c (pic16_genPlus): added code to handle cases where
result is greater in size than right or left,
* (pic16_genUMult8X8_8): there are some cases where the result can
be 16 bits size, so handle these,
* src/pic16/gen.c: changed some pic16_emitpcomment to DEBUGpic16_emitcode,
* (pic16_outBitC): modified to emit pcodes,
* (pic16_storeForReturn): using is_LitOp to see if operand is literal
or not,
* (genDivOneByte): implemented algorithm to divide 8-bits,
* (genCmp): uncommented goto, but issues still exist,
* (genAnd): fixed a bug with variables >8bits,
* (genPackBits): optimization added that uses BCF/BSF to change a
single bit,
* (genAssign): fixed bug when assigning floating point literals,
* src/pic16/glue.c (pic16glue): added assembler directive 'code' before
__sdcc_gsinit_startup label,
* src/pic16/main.c (_pic16_init): removed search directory
initialisations,
* (_pic16_initPaths): NEW, used to initialise search directories,
* (_hasNativeMulFor): support functions for all except char/int
multiplication, and char division,
* (PIC16_port struct): modified entry for native mul support,
* src/pic16/pcode.c (insertBankSwitch): modified to support the renamed
no_banksel option,
* (buildCallTree): call to register_usage is ifdef'ed out,

git-svn-id: https://sdcc.svn.sourceforge.net/svnroot/sdcc/trunk/sdcc@3323 4a8a32a2-be11-0410-ad9d-d568d2c75423