apk_database: move APK_DEFAULT_ARCH to headers so that we can use it in version().

src/apk_database.h

@@ -18,6 +18,16 @@
 #include "apk_package.h"
 #include "apk_io.h"
 
+/* default architecture for APK packages. */
+#if defined(__x86_64__)
+#define APK_DEFAULT_ARCH        "x86_64"
+#elif defined(__i386__)
+#define APK_DEFAULT_ARCH        "x86"
+#else   
+#warning APK_DEFAULT_ARCH is not set for this architecture
+#define APK_DEFAULT_ARCH        "noarch"
+#endif
+
 #define APK_MAX_REPOS		32
 #define APK_CACHE_CSUM_BYTES	4
 

src/database.c

@@ -34,14 +34,6 @@
 #include "apk_archive.h"
 #include "apk_print.h"
 
-#if defined(__x86_64__)
-#define APK_DEFAULT_ARCH	"x86_64"
-#elif defined(__i386__)
-#define APK_DEFAULT_ARCH	"x86"
-#else
-#define APK_DEFAULT_ARCH	"noarch"
-#endif
-
 enum {
 	APK_DISALLOW_RMDIR = 0,
 	APK_ALLOW_RMDIR = 1