Xworld - Another World interpreter for Rockbox

Co-conspirators: Franklin Wei, Benjamin Brown

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This work is based on:
- Fabien Sanglard's "Fabother World" based on
- Piotr Padkowski's newRaw interpreter which was based on
- Gregory Montoir's reverse engineering of
- Eric Chahi's assembly code

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Progress:

* The plugin runs pretty nicely (with sound!) on most color targets
* Keymaps for color LCD targets are complete
* The manual entry is finished
* Grayscale/monochrome support is NOT PLANNED
  - the game looks horrible in grayscale! :p

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Notes:

* The original game strings were built-in to the executable, and
  were copyrighted and could not be used.
* This port ships with an alternate set of strings by default, but
  can load the "official" strings from a file at runtime.

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To be done (in descending order of importance):

* vertical stride compatibility                          <30% done>
* optimization                                           <10% done>

Change-Id: I3155b0d97c2ac470cb8a2040f40d4139ddcebfa5
Reviewed-on: http://gerrit.rockbox.org/1077
Reviewed-by: Michael Giacomelli <giac2000@hotmail.com>

apps/plugins/SUBDIRS

@@ -12,6 +12,12 @@ clock
 /* For all targets with a bitmap display */
 #ifdef HAVE_LCD_BITMAP
 
+/* XWorld only supports color horizontal stride LCDs /for now/ ;) */
+#if (defined(HAVE_LCD_COLOR) && \
+    (!defined(LCD_STRIDEFORMAT) || (LCD_STRIDEFORMAT != VERTICAL_STRIDE))
+xworld
+#endif
+
 #if    (CONFIG_KEYPAD != ONDIO_PAD) /* not enough buttons */ \
     && (CONFIG_KEYPAD != SANSA_M200_PAD) /* not enough buttons */ \
     && (CONFIG_KEYPAD != HM60X_PAD) /* not enough buttons */ \