Remove endianess and type sizes from plugin name

On the one hand, plugins from different architectures cannot be mixed
in the same installation directory as they have the same names.
On the other hand, endianess and type sizes is way insufficient to
discriminate architectures (e.g. armel and i386 look the same).

So this was totally useless. And it did not need to be formatted at
run-time either.

src/modules/cache.c

@@ -60,12 +60,9 @@ static int    CacheLoadConfig  ( module_t *, FILE * );
  * (only used to avoid breakage in dev version when cache structure changes) */
 #define CACHE_SUBVERSION_NUM 12
 
-/* Format string for the cache filename */
-#define CACHENAME_FORMAT \
-    "plugins-%.2zx%.2zx%.2"PRIx8".dat"
+/* Cache filename */
+#define CACHE_NAME "plugins.dat"
 /* Magic for the cache filename */
-#define CACHENAME_VALUES \
-    sizeof(int), sizeof(void *), *(uint8_t *)&(uint16_t){ 0xbe1e }
 #define CACHE_STRING "cache "PACKAGE_NAME" "PACKAGE_VERSION
 
 
@@ -75,8 +72,7 @@ void CacheDelete( vlc_object_t *obj, const char *dir )
 
     assert( dir != NULL );
 
-    if( asprintf( &path, "%s"DIR_SEP CACHENAME_FORMAT,
-                  dir, CACHENAME_VALUES ) == -1 )
+    if( asprintf( &path, "%s"DIR_SEP CACHE_NAME, dir ) == -1 )
         return;
     msg_Dbg( obj, "removing plugins cache file %s", path );
     vlc_unlink( path );
@@ -106,8 +102,7 @@ void CacheLoad( vlc_object_t *p_this, module_bank_t *p_bank, const char *dir )
     if( !p_bank->b_cache )
         return;
 
-    if( asprintf( &psz_filename, "%s"DIR_SEP CACHENAME_FORMAT,
-                  dir, CACHENAME_VALUES ) == -1 )
+    if( asprintf( &psz_filename, "%s"DIR_SEP CACHE_NAME, dir ) == -1 )
         return;
 
     msg_Dbg( p_this, "loading plugins cache file %s", psz_filename );
@@ -444,8 +439,7 @@ void CacheSave (vlc_object_t *p_this, const char *dir,
 {
     char *filename, *tmpname;
 
-    if (asprintf (&filename, "%s"DIR_SEP CACHENAME_FORMAT, dir,
-                  CACHENAME_VALUES ) == -1)
+    if (asprintf (&filename, "%s"DIR_SEP CACHE_NAME, dir ) == -1)
         return;
 
     if (asprintf (&tmpname, "%s.%"PRIu32, filename, (uint32_t)getpid ()) == -1)