Update math/gnuplot to version 4.6.6
Tweak devel/libpeas version 1.8.1_1
Update multimedia/mlt to version 0.9.2
Update converters/R-cran-RJSONIO to version 1.3.0
Update devel/eric4 to version 4.5.24_2
Update audio/rhythmbox to version 0.12.8_18