Log Message:
gnuplot: updated to 5.2.5

CHANGES IN 5.2.5

NEW "set pm3d depthorder base" sorts pm3d quadrangles by projecting to z=0
NEW "set jitter vertical" displaces y coordinate rather than x coordinate
NEW array size can be determined automatically from the initializer
CHANGE place titles along x axis in plots with columnstacked histograms
CHANGE equivalent slope constraint for mcs splines at both ends of the range
CHANGE treat imaginary values plotted from a using spec as UNDEFINED (NaN)
CHANGE allow "reset" between plots in a multiplot layout
CHANGE Deprecate linux and vgagl terminals (to be removed in 5.3)
CHANGE placement of axis and tic labels in 3D projections on to xz or yz plane
CHANGE default to ./configure --without-wx-multithreading
FIX parametric function plots did not work with logscale x (regression in 5.2.0-4)
FIX polar mode "set trange" was assumed to use radians, now it tracks \ 
"set angle"
FIX clip polar grid lines and ticks to x/y range limits
FIX clipping of plot "with lines" when axes are nonlinear (regression \ 
from 5.0)
FIX clipping of all elements in finanacebars/candlesticks/boxplots
FIX clipping of 3D splot "with labels"
FIX strange interaction of "noautoscale" with blank data lines
FIX alignment of boxed text to center for eps/cairolatex
FIX incompatibility of "pm3d depthorder" and rgb color taken from data \ 
column
FIX aqua terminal font changes in enhanced text mode