Small fixes after Windows compat merge
Add linenoise rockspec for 0.6-1

-- This version should compile properly in MinGW now that win32fixes.c
is excluded from MinGW builds
- Add comment in linenoiselib.c explaining how to prevent escape
quitting the program in Windows
Add Windows build intermediates to .gitignore
Merge pull request #7 from Choonster/master

MinGW fixes, 0.6-1 rockspec, binary rock