This could hide namespace issues in fxruby.

The target objects stored in the accelerator table are currently
private. Therefore FXRbAccelTable::markfunc() doesn't mark them as used.
As a workaround the objects are additionally stored in @targets Hash.

Conflicts:
	ext/fox16/FXRuby.cpp

The Ruby String buffer was free'd by GC and FXMemoryStream#close

noticed at FXComboBox#fillItems

fix retrieving of file handles, so that FXApp#addInput works with ruby 1.8.7, 1.9.2 and rubinius under Linux (win32 not tested yet)

support rubinius

add tasks for downloading and cross compilation of libfox, fxscintilla and depending libraries for win32

the previous warning level the user had set instead of just assuming
that warnings were turned on. [#8 state:resolved]