Cheese Tracker Code

* font_bridge.cpp: Fixed compilation errors caused by changes
to GCC.

* Some keybindings have changed, and a few methods were
reindented. These changes were found under the released
files, but they weren't actually committed to SVN.

* loader_wav.cpp: When a file fails to open, the system error
message is now printed on stderr, instead of merely "Cannot open
file".

* sample_viewer.cpp: Fixed a bug where positions within a vector
were calculated with floating-point numbers, resulting in
out-of-bounds errors. Fixes bug #2120835.

* various files: Added #include directives required by newer
versions of GCC.

* mdi_main_window.cpp: Updated version string and release date.

* audio_config.cpp: Fixed bug #1887850: When selecting which
OSS device file to use, the DOSism "*.*" is no longer used.

At the same time, I have discovered that CheeseTracker
was written with the idea that device files can have
extensions. Each sound driver has a method called via
get_active_driver_disk_write_extension() that returns the string
"" for the extension. get_active_driver_disk_write_extension()
and the methods in the drivers that it depends on should be
removed, but I don't have time to track everything down and
make sure it still compiles. So I'm leaving this note in the
ChangeLog instead. Eventually I might get around to converting
this into a bug report.

* interface_binds/tracker_instance.(cpp|h): Fixed bug #1887846:
Program can now be compiled and linked without libaudiofile.
* *.xpm: Fixed compiler warning: No more "deprecated conversion"
warnings with newer GCC versions.

Changed release date and version string.

* mdi_main_window.cpp: Changed menu caption: "Mark - Sixteen notes"
becomes "Mark- quarter/half pattern length notes". Alt+D is still
the accelerator key.

* pattern_edit__keys.cpp (event): Changed the key-binding for
Solo to shift+F10 (previous binding was Shift+F12). Also added
a response for Shift+Tab.

Some indentation was modified, and some commented-out code was
removed.

sample_edit.(cpp|h) (Sample_Edit): Added a new edit effect:
edit_effects.trim.

* editor.h: The Pattern_Actions value Pattern_MARK_COLUMN_SIXTEEN
was renamed to Pattern_MARK_COLUMN_QUARTER_HALF

* editor_commands.cpp (perform_action): Added case for
Pattern_MARK_COLUMN_QUARTER_HALF

* editor_selection.cpp (mark_column_quarter_half): New method.

* pvector.h: Fixed bug #1850120 (Debian bug #456104), a compile
error under GCC 4.3.

* resampler_kernel.cpp (mix_sample): Fixed compile error: A
test to prevent a division by zero was placed before the
declaration and initialization of the variable being tested.
* file_format_manager.cpp (load_sample): The two-argument version
of this function did not handle exceptions correctly, resulting
in a loss of the ability to treat unrecognized sample formats as
raw. This bug has been fixed.