Fix [TIMOB-24480] Android: appc run based module builds fail due to double-namespaced classes in KrollGeneratedBindings.gperf

[sgtcoolguy]

• When full class name already includes the namespace in it, don't pre-pend the namespace
• Also fix handling when an Android module doesn't contain a "libs" directory.

JIRA: https://jira.appcelerator.org/browse/TIMOB-24480

[sgtcoolguy]

This was something I ran into specifically when attempting to build the ti.facebook module for Android using appc ti build --build-only

When compiling it would give errors like:

...generated/KrollGeneratedBindings.gperf:20:51: error: 'facebook::facebook' has not been declared

And, when I fixed that issue, I still ran into errors around trying to read a non-existent "libs" folder. So this PR also fixes our handling when there are no -pre-packaged/pre-compiled native *.so files under a libs folder (we try and check that the architectures match those defined in the module manifest if any do exist, but only if the folder exists now).

[hansemannn]

@sgtcoolguy I saw the ones with the non-existing "libs" one as Generating an empty directory fixed it for me, so maybe we can do something similar to what you did in #8876 ?

[sgtcoolguy]

@hansemannn I'm not sure what you mean here. This PR does fix the "libs" folder issue as well by guarding our reads of the directory with existence checks.

[hansemannn]

I've only read the first part (in compileAllFinal) before the comment. All clear now.

[garymathews]

CR: PASS
FT: PASS can build ti.facebook without any issues! 👍

[lokeshchdhry]

FR Passed.

Facebook module built without any issues with appc run -p android --build-only.

Appc Studio : 4.8.1.201612050850
SDK Version : Locally built 6.1.0
Mac OS Version : 10.12.3
Xcode Version : Xcode 8.2.1 Build version 8C1002
Appc CLI AND Appc NPM : {"NPM":"4.2.8","CLI":"6.1.0"}
Ti CLI : 5.0.11
Alloy : 1.9.5
Node : v4.6.0