ndnSIM

Hopefully, any major issues are fixed. 3.28 includes a few our patches (to src/wscript), so we no longer need a few customizations, including:

• 05158549275e897c7d17922bdeada483b2b8ab11 (was backported from the dev branch of NS-3)
• 4ead9ac6dd96dd5e4ab9ad7818ddaad340af98a5 (need to double check, may be included as part of some commit in 3.28)
• 1768ce2d2a87de0fb86ce41e773f19830c811194
• 0ee5773f7f25ada802eb2e6143d53962aee3323b (problem was fixed)
• 5185f469ecd64da1f987ae8e488e5a1575f2ce5a (not sure if still needed)
• 51be84e4410f4f9d24d6d6958c2c9be5207ba36a (was fixed)
• 88d4271681eff2315136c7c8167300e8270270ab (not needed anymore)

Commits to combine:

• 4069e73cfe3daf1b2af2c854e727e94338729e05 and ed0f3fba64d898f8fcf609a626a2278cb96f8aee