* Update files in src/plugins

Change-Id: Ia5d77fad7d19d4bb3498e78661982f68729adb22
Reviewed-by: Tobias Hunger <tobias.hunger@theqtcompany.com>

Task-number: QTCREATORBUG-13317
Change-Id: Ic7d1d5c94d8d522741b6c4207a21a43f521da5fb
Reviewed-by: Joerg Bornemann <joerg.bornemann@theqtcompany.com>

This is quite handy if you keep all your traces in one directory.

Change-Id: I09842404493c02fb0ca9c4a328950f7b6dcb5be0
Reviewed-by: Joerg Bornemann <joerg.bornemann@theqtcompany.com>

Flushing data while the application is running can distort the results
because the flushing itself takes time. However, not flushing leads to
longer load times in the end and higher memory usage. The best strategy
depends on the application being analyzed and the users should decide
if they want to flush or not.

The settings infrastructure also paves the way for preserviing the
layout of the timeline and statistics views as well as the category
filters across sessions.

Change-Id: I2cdc37c7fc7eb9b05b6870955ddffaa712d6c956
Reviewed-by: Leena Miettinen <riitta-leena.miettinen@theqtcompany.com>
Reviewed-by: Joerg Bornemann <joerg.bornemann@theqtcompany.com>