Set last-changed dates on all projects in preparation of the upcoming

1.5.6 release.

[Build]

org.lamport.tla.toolbox.product.product/org.lamport.tla.toolbox.product.product.product

@@ -8,9 +8,9 @@
       <text>
          TLA+ Toolbox provides a user interface for TLA+ Tools. 
 
-This is Version 1.5.6 of 16 January 2018 and includes:
+This is Version 1.5.6 of 29 January 2018 and includes:
   - SANY Version 2.1 of 23 July 2017
-  - TLC Version 2.12 of 16 January 2018
+  - TLC Version 2.12 of 29 January 2018
   - PlusCal Version 1.8 of 07 December 2015
   - TLATeX Version 1.0 of 20 September 2017
 

org.lamport.tla.toolbox.product.standalone/plugin.xml

@@ -30,7 +30,7 @@
          </property>
          <property
                name="aboutText"
-               value="TLA+ Toolbox provides a user interface for TLA+ Tools. &#x0A;&#x0A;This is Version 1.5.6 of 16 January 2018 and includes:&#x0A;  - SANY Version 2.1 of 23 July 2017&#x0A;  - TLC Version 2.12 of 16 January 2018&#x0A;  - PlusCal Version 1.8 of 07 December 2015&#x0A;  - TLATeX Version 1.0 of 20 September 2017&#x0A;&#x0A;Don&apos;t forget to click on help.  You can learn about features that you never knew about or have forgotten.&#x0A;&#x0A;Please send us reports of problems or suggestions; see https://groups.google.com/d/forum/tlaplus .">
+               value="TLA+ Toolbox provides a user interface for TLA+ Tools. &#x0A;&#x0A;This is Version 1.5.6 of 29 January 2018 and includes:&#x0A;  - SANY Version 2.1 of 23 July 2017&#x0A;  - TLC Version 2.12 of 29 January 2018&#x0A;  - PlusCal Version 1.8 of 07 December 2015&#x0A;  - TLATeX Version 1.0 of 20 September 2017&#x0A;&#x0A;Don&apos;t forget to click on help.  You can learn about features that you never knew about or have forgotten.&#x0A;&#x0A;Please send us reports of problems or suggestions; see https://groups.google.com/d/forum/tlaplus .">
          </property>
          <property
                name="aboutImage"

org.lamport.tla.toolbox.product.standalone/src/org/lamport/tla/toolbox/ui/intro/ToolboxIntroPart.java

@@ -175,7 +175,7 @@ public class ToolboxIntroPart extends IntroPart implements IIntroPart {
 
 		final Label lblVersion = new Label(outerContainer, SWT.WRAP);
 		lblVersion.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, false, false, 2, 1));
-		lblVersion.setText("Version 1.5.6 of 16 January 2018");
+		lblVersion.setText("Version 1.5.6 of 29 January 2018");
 		lblVersion.setBackground(backgroundColor);
 	}
 

tlatools/src/tlc2/TLCGlobals.java

@@ -22,7 +22,7 @@ public class TLCGlobals
 {
 
     // The current version of TLC
-    public static String versionOfTLC = "Version 2.12 of 16 January 2018";
+    public static String versionOfTLC = "Version 2.12 of 29 January 2018";
     
     // The bound for set enumeration, used for pretty printing
     public static int enumBound = 2000;