Align Sonic3_Complete output filename and ignore
Remove dependency on current dir in build scripts

Also means they don't change path on you any more.
Make AppendS3 use same out file as buildS3Complete
Fix mismatched filename in split script
Remove S3DAC headers from split script

They are no longer referenced anywhere and are not in source control.  As
there are commented references to them in the disassembly, I have left
their split entries commented here.
Ignore skbuilt.prev.bin backup too
Fix broken backup stuff in buildS3Complete.bat
Correct platform path slashes for Windows scripts
Macroify level select text
Label level select text
Move codepage selection to macro
Merge pull request #2 from tiddlets/master

Build batch file tweaks & level select editing improvement