Fix vulture usage and add vulture to Build-Depends * grml2iso is a shell script, executing vulture doesn't work on it * the Debian package build process executes 'make codecheck:', so everything what's needed for its execution needs to be covered through the Build-Dependencies, accordingly add add vulture to Build-Depends
grml2iso: switch from isohybrid to xorriso/isohybrid to properly support EFI boot This is the related change for grml-live's commit 6725bfa1ffc4, where we introduced EFI support on 32bit systems and switched from isohybrid to xorriso/isohybrid combination. The isohybrid binary doesn't support 32-bit FI systems and fails hard when using `--uefi` on a 32-bit ISO. But xorriso with appropriate options for EFI usage (see $BOOT_ARGS) and /usr/lib/ISOLINUX/isohdpfx.bin from the isolinux package seems to provide everything we need. JFTR: To properly support 64bit EFI boot with our grml96 ISOs, we also had to adjust the order of the provided ISOs in the grml2iso command line in our release process. Closes: grml/grml#149