Fixes ticket #51.

split is rendered moot by the plugin system: when enabled, binaries do
not link directly with libX11 or libGL. I hope this is a step towards
more consisteny and clarity.

and hton32() implementations everywhere instead, except in cacaserver
    which requires <arpa/inet.h> stuff anyway.

<cucul.h> will provide the C99 types, even if libcaca has been installed.
  * Rename what's left of "common.h" to "stubs.h".
  * Remove all references to erroneous <inttypes.h> from source files.

* Now sortchars’s output can be directly saved to a C header file.

* Use font 0 instead of font 1.
  * Print a bitmapped example at the end.

          _pBBBBPP"'             '7PBBBBBL    
        _BBBBP"   __p@BBBBBBBBBpp__   7%BBBb_ 
      _BBBB"   _@BBBBBPPPPPPPP%BBBBBpL   %BBBb
      BBB"  _@BBBP"'    ____     'PBBBBp   %BB
      BB   @BBBP   __iIIIIIIIIIiL   '%BBBL  7B
      P   BBBP   _IIII**''''"*lIIIi_  7BBBb  7
         BBBP   III/'  ,,:::,   "IIIi   BBBb  
        JBBB   III"  ,!!!!!!!!:,  lIIi  7BBB  
        BBBL  JIII  ,!!"'   '!!!   III   BBBL 
        BBBL  lIII  "!!,     !!!   IIIL  BBBP 
        BBBL   III   !!!::::!!!"  JIII   BBBL 
        JBBB   lIIIL  '"!!!!""'  iIII   @BBB  
      L  3BBBL  "lIIIi_      __iIII/   @BBB   
      BL  7BBBb   '*IIIIIIIIIIII/"   _@BBP   @
      BBb   %BBBb_    '"*****"'   __BBBB"  _BB
      %BBBp   7BBBBbpL__     __ppBBBBP"  _@BBB
       7%BBBp_  '7PBBBBBBBBBBBBBBPP'   _@BBBP 
         'PBBBBpL_   ''''PP"''''   _p@BBBBP

used for improved dithering.

+ Geometric Shapes, Halfwidth and Fullwidth Forms (as suggested by Ben
      Wiley Sittler)
    + Miscellaneous Symbols (as suggested by Mohammed Adnène Trojette)

* Minor changes to the font2tga test program.

* Add Katakanas and Hiraganas to the default fonts.

fonts yet anyway :-)

functionality into cucul_set_attr().
  * Add cucul_ansi_to_attr() and cucul_argb_to_attr().
  * Rename CUCUL_COLOR_* to CUCUL_*.

from an alternate directory (they failed to find common.h).

limitation of 509 characters. Instead of doing:
       char foo[10] = "abcdefghij";
    we now do:
       struct { char f1[4], f2[4], f3[2]; } foo = { "abcd", "efgh", "ij" };

are unavailable, this is a significant gain.

good with Pango.

built-in font so that we now cover all of CP437.

* Implement htons/htonl in common.h just in case.

in all .c files that needed it.

NOTES to tools/optipal.c.

so that the font can be easily rebuilt.

* Replaced the 8-bit internal font with a 4-bit one.

contain development tools that are only useful to libcaca developers.