Add single crunch command to aapt. do not merge.

Previously the crunch command would work on a full res folder
and output a full res folder (with only the drawables). This
was only used in the SDK.

The incremental logic is moved to the SDK build system so we
change the crunch command (or rather add a new one) to only
crunch a single file.

(cherry picked from commit b1f6ad82dd8d1702617a757a88430604b3131fac)

Change-Id: I3653f67ee321eac37cb8a6d228b1ef6d104ff0be
diff --git a/tools/aapt/Command.cpp b/tools/aapt/Command.cpp
index 0a5e590..b98925b 100644
--- a/tools/aapt/Command.cpp
+++ b/tools/aapt/Command.cpp
@@ -7,6 +7,7 @@
 #include "Bundle.h"
 #include "ResourceFilter.h"
 #include "ResourceTable.h"
+#include "Images.h"
 #include "XMLNode.h"
 
 #include <utils/Log.h>
@@ -1839,6 +1840,21 @@
     return NO_ERROR;
 }
 
+/*
+ * Do PNG Crunching on a single flag
+ *  -i points to a single png file
+ *  -o points to a single png output file
+ */
+int doSingleCrunch(Bundle* bundle)
+{
+    fprintf(stdout, "Crunching single PNG file: %s\n", bundle->getSingleCrunchInputFile());
+    fprintf(stdout, "\tOutput file: %s\n", bundle->getSingleCrunchOutputFile());
+
+    String8 input(bundle->getSingleCrunchInputFile());
+    String8 output(bundle->getSingleCrunchOutputFile());
+    return preProcessImageToCache(bundle, input, output);
+}
+
 char CONSOLE_DATA[2925] = {
     32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32,
     32, 32, 32, 32, 32, 32, 32, 95, 46, 32, 32, 32, 32, 32, 32, 32, 32, 32,