Bug 549697: Mark update font methods in Terminal as deprecated

There are two ways of specifying fonts in the terminal,
one via font definitions, and one via the font directly. The
method via the font directly was already deprecated in the public
API, this commit follows that deprecation chain through to
make it easier to identify which code paths are not likely
relevant anymore.

These methods could simply be removed as part of the major version
bump.

Change-Id: I05d746c429c4e6c3ced5ee7bb7a6172e0a255c2d

terminal/plugins/org.eclipse.tm.terminal.control/src/org/eclipse/tm/internal/terminal/textcanvas/ILinelRenderer.java

@@ -29,7 +29,9 @@ public interface ILinelRenderer {
 
 	/**
 	 * Update for a font change from the global JFace Registry.
+	 * @deprecated Use {@link #updateFont(String)}
 	 */
+	@Deprecated
 	void onFontChange();
 
 	/**

terminal/plugins/org.eclipse.tm.terminal.control/src/org/eclipse/tm/internal/terminal/textcanvas/StyleMap.java

@@ -206,6 +206,10 @@ public class StyleMap {
 		return fCharSize.y;
 	}
 
+	/**
+	 * @deprecated Use {@link #updateFont(String)}
+	 */
+	@Deprecated
 	public void updateFont() {
 		updateFont(ITerminalConstants.FONT_DEFINITION);
 	}

terminal/plugins/org.eclipse.tm.terminal.control/src/org/eclipse/tm/internal/terminal/textcanvas/TextCanvas.java

@@ -473,7 +473,9 @@ public class TextCanvas extends GridCanvas {
 
 	/**
 	 * Notify about a change of the global Font Preference.
+	 * @deprecated Use {@link #updateFont(String)}
 	 */
+	@Deprecated
 	public void onFontChange() {
 		fCellRenderer.onFontChange();
 		setCellWidth(fCellRenderer.getCellWidth());

terminal/plugins/org.eclipse.tm.terminal.control/src/org/eclipse/tm/internal/terminal/textcanvas/TextLineRenderer.java

@@ -169,6 +169,10 @@ public class TextLineRenderer implements ILinelRenderer {
 		return fModel.getTerminalText();
 	}
 
+	/**
+	 * @deprecated Use {@link #updateFont(String)}
+	 */
+	@Deprecated
 	@Override
 	public void onFontChange() {
 		fStyleMap.updateFont();