Update coord.py

sys is used by .info() but missing.
Use box widget for vertical scaling
Make isosurface config more efficient.
got it to plot time inof
fixes #656
fix #669, labels were wrongly drawn for 1D plots
same on x axis
ooops had it fixed the wrong way
got all gm to not fail and pass tests
Scale marker size to be the same in all viewports.
first put it back on by default
merged master back in
updated pictures to pass test, checked the new ones are still good
fix #676
got the portrait plot to appear, need to tweak postscript now
Merge remote-tracking branch 'devel/issue_669_1d_y1_y2'
Rename "ncurses" to "curses".

The current package logic in cmake_util.cmake uses the package name
to locate the appropriate find module when CDAT_USE_SYSTEM_XXX is
enabled. Since ncurses is found by the FindCurses.cmake module, this
change allows the system curses to be used.

This is required for Arch Linux, since the version of ncurses used does
not compile on gcc 4.9.0.
Adding 2 png sources that are on my system but not in repo
Merge branch 'issue_656_time_and_labels' into staging2
Merge branch 'issue_648_constant_value' into staging2