openal fix, training map selection and rcplane adjustments from Smaxx (untested, but look reasonable). Bunch of new graphics from Tiy, new translation for pt-pt from inu_
install(FILES
Border.png
Flake.png
Girder.png
horizont.png
icon.png
LandTex.png
plant1.png
plant2.png
plant3.png
plant4.png
Sky.png
theme.cfg
DESTINATION ${SHAREPATH}Data/Themes/nature)