FTBFS after `java-hamcrest` upgraded to 3.0

Description:

With java-hamcrest 3.0-1, the build process of libreoffice-still with fail with:

checking for standalone hamcrest jar.... configure: error: junit does not contain hamcrest; please use a junit jar that includes hamcrest, install a hamcrest jar in the default location (/usr/share/java),
                          specify its path with --with-hamcrest=..., or disable junit with --without-junit
Error running configure at ./autogen.sh line 321.