Reviewed-by: Tobias Hunger

 * Add a DeployConfiguration class to hold settings related
   to deployment.
 * Add BuildStepsList to hold a list of buildsteps
 * Update BuildConfiguration to use BuildStepLists instead of
   manageing lists of buildsteps itself.
 * Update BuildManager to use BuildStepLists in its interfaces
 * Fix fallout introduced by API changes
 * Update .user file to new way of storing settings

Task-number: QTCREATORBUG-1427
Task-number: QTCREATORBUG-1428
Task-number: QTCREATORBUG-1811
Task-number: QTCREATORBUG-1930

Added support for passphrases for keys for Symbian OS

Reviewed-by: Tobias Hunger

We create a .sis package per leaf project now, deploy all of them and
start the executable for the runconfiguration that was selected. This
does not cover all use cases, but works for development.

(cherry picked from commit b87f3fbc)

 * Add "Deploy" to BuildSteps::Type
 * Update UIs to handle deploy steps
 * Turn existing package creation steps from build type to deploy type
 * Move packaging steps into deploy steps when loading projects

Reviewed-by: dt

 * Move and rename the enum
 * Add Q_ENUMS macro

Reviewed-by: dt

Reviewed-by: ossi

Task-number: QTCREATORBUG-1341

By providing a "Use Smart Installer" option for the packaging step.

for sis creation.