Litecoin: Runtime paths s/bitcoin/litecoin/
Litecoin: Build script s/bitcoin/litecoin/
Litecoin: Tests
Litecoin: User exposed strings s/bitcoin/litecoin/

Source filenames, comments and other aspects hidden to end-users are not renamed in an effort to minimize the diff.
Litecoin: Localization tweaks for 0.8.3.x in src/qt/locale/*.ts
Litecoin: Documentation s/bitcoin/litecoin/
Litecoin: Reduce MinTxFee to 0.02 LTC