scripts: update distclean

The toolchains are now built in .build/ rather than in targets/
so distclean has to get rid of that.

We also clean up the old dir, as users may have old samples that
still refer to the old location.

Do not hide messages during distclean, and do not ignore errors.

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>

syntax: glob

# Generated files

Makefile

ct-ng

docs/ct-ng.1

docs/ct-ng.1.gz

paths.mk

scripts/crosstool-NG.sh

scripts/saveSample.sh

scripts/showTuple.sh

kconfig/conf

kconfig/mconf

kconfig/**.o

kconfig/**.dep

config.gen/

.config

# Temporaries

.*.swp

log.*

.config.old

# This is the place where toolchains are built

.build/

# .. and the legacy location

targets/