Android support

Traces supports compilation for Android/ARM targets. Traces has some benefits over the plain Android logs, as shown in the following table:

	Android logs	Traces
Performance	string-formatting + a call to writev() per log. Unsuitable for very frequent logging	No string formatting and no system calls per log. Parsing is done offline
Presentation	non-colored and non-typed output	Colored and typed output, enabling complex search expressions
Memory	Uses global ringbuffer, shared by other applications. Typically under 1 MB	ringbuffer exists per-application. Different severities have different buffers.
Function traces	No explicit support for function traces	Functions can be automatically traced