"System Properties" pane. It copies the anonymized system
properties, DrJava configuration file, and memory information
to the clipboard. This should make it easier to ask people to
provide more detailed information for bug reports that don't
contain an exception.
Also changed the keyboard shortcuts for "browse forward/backward"
from Alt-Left/Right (or Option-Left/Right on Macs) to
Alt-Shift-Left/Right. Especially on the Mac, the old choice
was often triggered accidentally.
M src/edu/rice/cs/drjava/config/OptionConstants.java
M src/edu/rice/cs/drjava/ui/AboutDialog.java
M src/edu/rice/cs/drjava/ui/DrJavaErrorWindow.java
