Squish: Build Qml debug lib only if necessary

Change-Id: I90cf1f9e57d39211ea151b1cfc52e27f4ecaf654
Reviewed-by: Robert Loehning <robert.loehning@digia.com>
Squish: Move common code to shared file

Change-Id: I5e268d6faf9a2a5a779e850667c582328c42387d
Reviewed-by: Robert Loehning <robert.loehning@digia.com>
Squish: Fix determination of available targets

Change-Id: Iff01b44058dd9175aacfb0a0da96f35fb32383e7
Reviewed-by: Robert Loehning <robert.loehning@digia.com>
Squish: Move common function to shared script

Change-Id: I59d341f9f7a5c86bc3b723dbdc1e1596d464c92c
Reviewed-by: Robert Loehning <robert.loehning@digia.com>
Squish: Prepare enabling Qt5 for suite_qtquick

Change-Id: I7c4ac62be8f30867953f776ad56ab3ffbf6cd909
Reviewed-by: Robert Loehning <robert.loehning@digia.com>