Add Android implementation of writeToDebugConsole that prints to Logcat

[michaelcowan]

Description

Adds an implementation of writeToDebugConsole for Android that logs directly to Logcat.

In my opinion, this provides a really good out-of-the-box experience for Android NDK developers.

Notes

I refrained from adding CATCH_PLATFORM_ANDROID and a catch_android_h_proxy.h as this felt a little heavy considering that the platform is really more Linux-like and the change is very focused. Happy to make any changes suggested though 😄

[codecov]

Codecov Report

Merging #1710 into master will decrease coverage by 2.25%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #1710      +/-   ##
==========================================
- Coverage   86.18%   83.93%   -2.25%     
==========================================
  Files         136      123      -13     
  Lines        5180     3398    -1782     
==========================================
- Hits         4464     2852    -1612     
+ Misses        716      546     -170

[codecov]

Codecov Report

Merging #1710 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #1710   +/-   ##
=======================================
  Coverage   86.18%   86.18%           
=======================================
  Files         136      136           
  Lines        5180     5180           
=======================================
  Hits         4464     4464           
  Misses        716      716

[michaelcowan]

The Travis job failed because of the Python configuration job which I think looks to be unrelated to this change.

The coverage decrease is annoying though. Not really sure how I can improve that without adding an Android test configuration.

[horenmar]

If you rebase onto master, travis should work now. As for AppVeyor, you should use elif defined(CATCH_PLATFORM_WINDOWS), because it does not have integral value.

[horenmar]

Okay, thanks.