This artifact originates from the Orbit Project at Eclipse, it is an osgi bundle and is signed as well.
'org.eclipse.jetty.orbit:org.apache.taglibs.standard.glassfish:1.2.0.v201112081803'
<dependency>
<groupId>org.eclipse.jetty.orbit</groupId>
<artifactId>org.apache.taglibs.standard.glassfish</artifactId>
<version>1.2.0.v201112081803</version>
</dependency>
<dependency org="org.eclipse.jetty.orbit" name="org.apache.taglibs.standard.glassfish" rev="1.2.0.v201112081803"/>
"org.eclipse.jetty.orbit", "org.apache.taglibs.standard.glassfish", "1.2.0.v201112081803"