cre cache: allow for disabling compression (#3670)

With ["cre_compress_cached_data"] = false in settings.reader.lua.
Not using compression for cache files does indeed take more space,
but it does speed up opening, rendering, page turns, and closing,
with big documents.
Bump base and crengine.

frontend/document/credocument.lua

@@ -47,7 +47,8 @@ function CreDocument:cacheInit()
     if lfs.attributes("./cr3cache", "mode") == "directory" then
         os.execute("rm -r ./cr3cache")
     end
-    cre.initCache(DataStorage:getDataDir() .. "/cache/cr3cache", 1024*1024*32)
+    cre.initCache(DataStorage:getDataDir() .. "/cache/cr3cache", 1024*1024*32,
+        G_reader_settings:nilOrTrue("cre_compress_cached_data"))
 end
 
 function CreDocument:engineInit()