doc: fix order of arguments when building using CMake.
doc: no need to explicitly specify compatibility flags anymore.
doc: fix wording in building documentation.
Make GCC47_COMPATIBILITY message less misleading.

We are enabling it also for 4.8.0, because it doesn't have rvalue
references for *this yet.
Updated toolchains submodule with Android support.
Initial Android support.
Apparently Android is something like newlib.
Implicitly enable static build for Android.
doc: Android building documentation.
package: Android development PKGBUILDs.
Utility: added AndroidLogStreamBuffer class.

Work arounds the massive annoyance of stdout redirected to /dev/hell.
Superfluous endif.

Affected only Doxygen, though.
doc: fix section header.
Doc++
Advertise Android support.
doc: building documentation improvements.

 * Using platform-independent `cmake --build` instead of `make`.
 * Renamed section identifiers to be unique also regarding depending
   projects (for referencing).
 * Mentioned ArchLinux development packages.
Utility: the library needs to be linked to `log` on Android.
Set minimal Android version.
Containers: test calling Array<char>::from() with integers.

Fails to compile on Clang.
Containers: fix narrowing errors in Array::from().

The test now compiles and passes again.