Bug 42625 Default for compiler compliance level
From a mail from Philippe: In order to reflect the migration to 1.4, compiler settings for JDT/Core projects should be: - compiler compliance 1.4 - source compatibility 1.3 - generated classfile compatibility 1.2 These are 1.4 compilers defaults anyway. JDT/UI got informed that their defaults in 1.4 compliant mode do not match expectation. Martin, can you please change our defaults.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/preferences/CompilerConfigurationBlock.java
othersComposite.setLayout(layout);
		
		Label description= new Label(othersComposite, SWT.WRAP);
		description.setText(PreferencesMessages.getString("CompilerConfigurationBlock.build_warnings.description")); 
		GridData gd= new GridData(GridData.FILL_HORIZONTAL | GridData.GRAB_HORIZONTAL);
		gd.horizontalSpan= nColumns;
		description.setLayoutData(gd);
				
		String label= PreferencesMessages.getString("CompilerConfigurationBlock.pb_incomplete_build_path.label"); 
		addComboBox(othersComposite, label, PREF_PB_INCOMPLETE_BUILDPATH, errorWarning, errorWarningLabels, 0);	
		
		label= PreferencesMessages.getString("CompilerConfigurationBlock.pb_build_path_cycles.label"); 
		addComboBox(othersComposite, label, PREF_PB_CIRCULAR_BUILDPATH, errorWarning, errorWarningLabels, 0);
		label= PreferencesMessages.getString("CompilerConfigurationBlock.pb_duplicate_resources.label"); 
		addComboBox(othersComposite, label, PREF_PB_DUPLICATE_RESOURCE, errorWarning, errorWarningLabels, 0);
		String[] errorWarningIgnore= new String[] { ERROR, WARNING, IGNORE };
		
		String[] errorWarningIgnoreLabels= new String[] {
			PreferencesMessages.getString("CompilerConfigurationBlock.error"),  
			PreferencesMessages.getString("CompilerConfigurationBlock.warning"), 
			PreferencesMessages.getString("CompilerConfigurationBlock.ignore") 
		};
		label= PreferencesMessages.getString("CompilerConfigurationBlock.pb_check_prereq_binary_level.label");  
		addComboBox(othersComposite, label, PREF_PB_INCOMPATIBLE_JDK_LEVEL, errorWarningIgnore, errorWarningIgnoreLabels, 0);	
		label= PreferencesMessages.getString("CompilerConfigurationBlock.build_invalid_classpath.label"); 
		addCheckBox(othersComposite, label, PREF_BUILD_INVALID_CLASSPATH, abortIgnoreValues, 0);
		label= PreferencesMessages.getString("CompilerConfigurationBlock.build_clean_outputfolder.label"); 
		addCheckBox(othersComposite, label, PREF_BUILD_CLEAN_OUTPUT_FOLDER, cleanIgnoreValues, 0);
		label= PreferencesMessages.getString("CompilerConfigurationBlock.enable_exclusion_patterns.label"); 
		addCheckBox(othersComposite, label, PREF_ENABLE_EXCLUSION_PATTERNS, enableDisableValues, 0);