Assume the tools location if the environment variable isn't set

git-svn-id: https://google-web-toolkit.googlecode.com/svn/trunk@93 8db76d5a-ed1c-0410-87a9-c151d255dfc7

common.ant.xml

diff --git a/common.ant.xml b/common.ant.xml
index 89ff007..e97178f 100755
--- a/common.ant.xml
+++ b/common.ant.xml
@@ -10,7 +10,10 @@
 	<condition property="gwt.version" value="${env.GWT_VERSION}" else="0.0.0">

 		<isset property="env.GWT_VERSION" />

 	</condition>

-	<property name="gwt.tools" location="${env.GWT_TOOLS}" />

+	<condition property="gwt.tools.check" value="${env.GWT_TOOLS}" else="${gwt.root}/../tools">

+		<isset property="env.GWT_TOOLS" />

+	</condition>

+	<property name="gwt.tools" location="${gwt.tools.check}" />

 	<property name="gwt.tools.lib" location="${gwt.tools}/lib" />

 	<property name="gwt.tools.antlib" location="${gwt.tools}/antlib" />

 	<property name="gwt.tools.redist" location="${gwt.tools}/redist" />