Bug 572987 - I-build-4.20 build failed due to failure in swt build input
job

Mandate utf8 in javac call as if otherwise system default is used and it
will fail to map all characters.

Change-Id: I32a4d63c93c3d4aff96d0d8286fb3406c85fe48c
Reviewed-on: https://git.eclipse.org/r/c/platform/eclipse.platform.swt/+/179540
Tested-by: Platform Bot <platform-bot@eclipse.org>
Reviewed-by: Alexander Kurtakov <akurtako@redhat.com>
diff --git a/bundles/org.eclipse.swt/buildSWT.xml b/bundles/org.eclipse.swt/buildSWT.xml
index 3458981..fec169c 100644
--- a/bundles/org.eclipse.swt/buildSWT.xml
+++ b/bundles/org.eclipse.swt/buildSWT.xml
@@ -292,7 +292,7 @@
 		</xslt>
 		<ant antfile="${tmpdir}/copy_chromium.xml" target="copy_files"/>
 
-		<javac includeantruntime="false" srcdir="${buildDir}"></javac>
+		<javac includeantruntime="false" srcdir="${buildDir}" encoding="utf8"></javac>
 	</target>
 
 	<!-- common build tasks -->