• Update Doom Legacy to version 1.46.3
• Do not pass SVN_REV via CFLAGS, it is now defined in `src/d_main.c'
• OLD_DEPENDENCIES is no longer a valid setting, stop referencing it
• When adjusting default WAD search path, fix only one DEFWADS rather than a bunch of them (one is enough)
• Remove old hack for better support for relative paths (for `-iwad' switch): it no longer applies and the game works correctly per se
• Remove Clang-related fixes that were integrated upstream
• Do not overwrite `make_options' file, simply append few necessary settings at the end of it

List of changes: http://doomlegacy.sourceforge.net/docs/whatsnew.html