修复loadlib小模块在安卓上会一直复制so库文件

Zframework/loadLib.lua

@@ -1,6 +1,8 @@
 package.cpath=package.cpath..';'..SAVEDIR..'/lib/lib?.so;'..'?.dylib'
+local loaded={}
 return function(libName)
     if SYSTEM=='Android'then
+        if not loaded[libName]then
             local platform=(function()
                 local p=io.popen('uname -m')
                 local arch=p:read('*a'):lower()
@@ -13,6 +15,8 @@ return function(libName)
                 'lib/libCCloader.so',
                 love.filesystem.read('data','libAndroid/'..platform..'/libCCloader.so')
             )
+            loaded[libName]=true
+        end
     end
     local r1,r2,r3=pcall(require,libName)
     if r1 and r2 then