Update travis-ci build dependencies to include texinfo
Update travis-ci build dependencies to include texinfo

zwaldowski/libffi-iOS,nmav/libffi,plicease/libffi,Distrotech/libffi,biosbits/libffi,johne53/MB3Libffi,biosbits/libffi,bgarrels/libffi,nmav/libffi,johne53/MB3Libffi,s1341/libffi,nmav/libffi,rth7680/libffi,bgarrels/libffi,Distrotech/libffi,rth7680/libffi,rth7680/libffi,bgarrels/libffi,biosbits/libffi,Distrotech/libffi,rth7680/libffi,Pan7/libffi,Pan7/libffi,joshtriplett/libffi,Pan7/libffi,johne53/MB3Libffi,plicease/libffi,zwaldowski/libffi-iOS,plicease/libffi,davibe/libffi,s1341/libffi,s1341/libffi,s1341/libffi,davibe/libffi,joshtriplett/libffi,biosbits/libffi,joshtriplett/libffi,davibe/libffi,zwaldowski/libffi-iOS,johne53/MB3Libffi,joshtriplett/libffi,zwaldowski/libffi-iOS,johne53/MB3Libffi,nmav/libffi,zwaldowski/libffi-iOS,Pan7/libffi,bgarrels/libffi,plicease/libffi,Distrotech/libffi,davibe/libffi