Merge pull request Tencent#708 from Tencent/dev

sync dev to master.

[enhancement] protect get main process from appinfo

Merge branch 'dev' of https://github.com/Tencent/tinker into dev

change tinker version to 1.8.1

enlarge dex wait time and size to promote success rate

change tinker version to 1.7.11

change tinker version to 1.7.10

edit Readme to version 1.7.9

update README to tinker version 1.7.8

1. prepare for release 1.7.7

2.  fix xposed judgment