Fixes build by updating reference to recent antlr library.
Fixes build by updating reference to recent antlr library.

mredaelli/jabref,oscargus/jabref,shitikanth/jabref,Mr-DLib/jabref,mredaelli/jabref,ayanai1/jabref,sauliusg/jabref,shitikanth/jabref,jhshinn/jabref,shitikanth/jabref,motokito/jabref,tschechlovdev/jabref,JabRef/jabref,tobiasdiez/jabref,mairdl/jabref,oscargus/jabref,Braunch/jabref,sauliusg/jabref,mredaelli/jabref,Siedlerchr/jabref,zellerdev/jabref,jhshinn/jabref,obraliar/jabref,motokito/jabref,tschechlovdev/jabref,oscargus/jabref,obraliar/jabref,tobiasdiez/jabref,Siedlerchr/jabref,JabRef/jabref,ayanai1/jabref,Mr-DLib/jabref,mredaelli/jabref,grimes2/jabref,jhshinn/jabref,Mr-DLib/jabref,zellerdev/jabref,sauliusg/jabref,grimes2/jabref,sauliusg/jabref,tobiasdiez/jabref,motokito/jabref,ayanai1/jabref,Braunch/jabref,ayanai1/jabref,Braunch/jabref,obraliar/jabref,Braunch/jabref,ayanai1/jabref,Siedlerchr/jabref,mairdl/jabref,mairdl/jabref,zellerdev/jabref,motokito/jabref,tschechlovdev/jabref,obraliar/jabref,JabRef/jabref,shitikanth/jabref,shitikanth/jabref,bartsch-dev/jabref,jhshinn/jabref,zellerdev/jabref,jhshinn/jabref,bartsch-dev/jabref,tschechlovdev/jabref,Siedlerchr/jabref,Mr-DLib/jabref,Braunch/jabref,oscargus/jabref,mredaelli/jabref,obraliar/jabref,zellerdev/jabref,grimes2/jabref,mairdl/jabref,oscargus/jabref,JabRef/jabref,tobiasdiez/jabref,bartsch-dev/jabref,motokito/jabref,mairdl/jabref,tschechlovdev/jabref,bartsch-dev/jabref,Mr-DLib/jabref,grimes2/jabref,bartsch-dev/jabref,grimes2/jabref