[fix, Android] Set executable bit (#5349)
[fix, Android] Set executable bit (#5349)

Partially reverts d2536d8b7e9474bd7748b199d1f01a53f332942a.

Fixes <https://github.com/koreader/koreader/issues/5347>.
Hzj-jie/koreader,poire-z/koreader,mwoz123/koreader,pazos/koreader,NiLuJe/koreader,koreader/koreader,koreader/koreader,poire-z/koreader,Markismus/koreader,Frenzie/koreader,NiLuJe/koreader,mihailim/koreader,Frenzie/koreader