[cordova][xwalk-2822] Remove --shared option from cordova 3.6.3 packaging

- According XWALK-2794 comment, the '--shared' option is not supported by upstream Cordova 3.6.3, remove it from all packaging line.

Impacted tests(approved): new 0, update 4, delete 0
Unit test platform: [Android]
Unit test result summary: pass 4, fail 0, block 0
Merge pull request #1099 from haoxli/haoxli/cordova/xwalk-2822

[cordova][xwalk-2822] Remove --shared option from cordova 3.6.3 packaging