don't validate executable paths & working dirs in build & run configs

it's well within expectations that they do not exist at the time of
configuration (especially when shadow building).
additionally, keeping the validation info (macros and environment)
up-to-date would require a notification infrastructure which is just not
worth the effort.

src/plugins/cmakeprojectmanager/cmakerunconfiguration.cpp

@@ -333,9 +333,9 @@ CMakeRunConfigurationWidget::CMakeRunConfigurationWidget(CMakeRunConfiguration *
     fl->addRow(tr("Arguments:"), argumentsLineEdit);
 
     m_workingDirectoryEdit = new Utils::PathChooser();
+    m_workingDirectoryEdit->setExpectedKind(Utils::PathChooser::Directory);
     m_workingDirectoryEdit->setBaseDirectory(m_cmakeRunConfiguration->target()->project()->projectDirectory());
     m_workingDirectoryEdit->setPath(m_cmakeRunConfiguration->baseWorkingDirectory());
-    m_workingDirectoryEdit->setExpectedKind(Utils::PathChooser::ExistingDirectory);
     m_workingDirectoryEdit->setPromptDialogTitle(tr("Select Working Directory"));
 
     QToolButton *resetButton = new QToolButton();

src/plugins/projectexplorer/customexecutableconfigurationwidget.cpp

@@ -62,8 +62,8 @@ CustomExecutableConfigurationWidget::CustomExecutableConfigurationWidget(CustomE
     layout->setMargin(0);
 
     m_executableChooser = new Utils::PathChooser(this);
-    m_executableChooser->setEnvironment(rc->environment());
     m_executableChooser->setExpectedKind(Utils::PathChooser::Command);
+    m_executableChooser->setEnvironment(rc->environment());
     layout->addRow(tr("Executable:"), m_executableChooser);
 
     m_commandLineArgumentsLineEdit = new QLineEdit(this);

src/plugins/projectexplorer/processstep.cpp

@@ -258,7 +258,7 @@ ProcessStepConfigWidget::ProcessStepConfigWidget(ProcessStep *step)
         : m_step(step)
 {
     m_ui.setupUi(this);
-    m_ui.command->setExpectedKind(Utils::PathChooser::ExistingCommand);
+    m_ui.command->setExpectedKind(Utils::PathChooser::Command);
     connect(m_ui.command, SIGNAL(changed(QString)),
             this, SLOT(commandLineEditTextEdited()));
     connect(m_ui.workingDirectory, SIGNAL(changed(QString)),

src/plugins/projectexplorer/toolchainconfigwidget.cpp

@@ -111,9 +111,9 @@ void ToolChainConfigWidget::ensureDebuggerPathChooser(const QStringList &version
     if (m_d->m_debuggerPathChooser)
         return;
     m_d->m_debuggerPathChooser = new Utils::PathChooser;
+    m_d->m_debuggerPathChooser->setExpectedKind(Utils::PathChooser::ExistingCommand);
     if (!versionArguments.isEmpty())
         m_d->m_debuggerPathChooser->setCommandVersionArguments(versionArguments);
-    m_d->m_debuggerPathChooser->setExpectedKind(Utils::PathChooser::ExistingCommand);
     connect(m_d->m_debuggerPathChooser, SIGNAL(changed(QString)), this, SLOT(emitDirty()));
 }
 

src/plugins/qt4projectmanager/qt-desktop/qt4runconfiguration.cpp

@@ -214,9 +214,9 @@ Qt4RunConfigurationWidget::Qt4RunConfigurationWidget(Qt4RunConfiguration *qt4Run
     toplayout->addRow(argumentsLabel, m_argumentsLineEdit);
 
     m_workingDirectoryEdit = new Utils::PathChooser(this);
+    m_workingDirectoryEdit->setExpectedKind(Utils::PathChooser::Directory);
     m_workingDirectoryEdit->setPath(m_qt4RunConfiguration->baseWorkingDirectory());
     m_workingDirectoryEdit->setBaseDirectory(m_qt4RunConfiguration->target()->project()->projectDirectory());
-    m_workingDirectoryEdit->setExpectedKind(Utils::PathChooser::ExistingDirectory);
     m_workingDirectoryEdit->setEnvironment(m_qt4RunConfiguration->environment());
     m_workingDirectoryEdit->setPromptDialogTitle(tr("Select Working Directory"));