* .gitignore: Update.
* lib/linux/x86-mes-m2/crt1.M1: New file.
* lib/linux/x86-mes-m2/crt1.c: New file.
* lib/m2/x86/x86_defs.M1: New file. Import from stage0.
* lib/m2/x86/ELF-i386-debug.hex2: New file. Import from M2-Planet.
* scaffold/main.c: Update for M2-Planet.
* scaffold/main.kaem: New file.