add function name

[jeromerousselot]

there is potential for conflicts with other widgets due to the short add function name:

install.packages("gWidgets")

library(omnetpp)
library(gWidgets)

Attachement du package : 'gWidgets'

The following object(s) are masked from package:omnetpp :

 add 

[btomi]

'add' and 'discard' is not an exported name of the 'omnetpp' package anymore.