Don't read only some rows

probably the same reason as for the early read - synchronization issue in
ufo-core, the slices are sometimes corrupted.

src/ufo-anka-backproject-task.c

@@ -32,7 +32,7 @@
 
 /* Copy only neccessary projection region */
 /* TODO: make this a parameter? */
-#define COPY_PROJECTION_REGION 1
+#define COPY_PROJECTION_REGION 0
 #define EXTRACT_FLOAT(region, index) g_value_get_float (g_value_array_get_nth ((region), (index)))
 #define REGION_SIZE(region) ((EXTRACT_INT ((region), 2)) == 0) ? 0 : \
                             ((EXTRACT_INT ((region), 1) - EXTRACT_INT ((region), 0) - 1) /\