tools: rename to 'utils'

After some discussion, we found out that "tools" has the four first
letters identical to the "toolchain" subfolder, which makes it a bit
unpractical with tab-completion. So, this commit renames "tools" to
"utils", which is more tab-completion-friendly.

This has been discussed with Arnout and Yann.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

utils/brmake

@@ -0,0 +1,37 @@
+#!/bin/bash
+# (C) 2016, "Yann E. MORIN" <yann.morin.1998@free.fr>
+# License: WTFPL, https://spdx.org/licenses/WTFPL.html
+
+main() {
+    local found ret start d h m mf
+
+    if ! which unbuffer >/dev/null 2>&1; then
+        printf "you need to install 'unbuffer' (from package expect or expect-dev)\n" >&2
+        exit 1
+    fi
+
+    start=${SECONDS}
+
+    ( exec 2>&1; unbuffer make "${@}"; ) \
+    > >( while read line; do
+             printf "%(%Y-%m-%dT%H:%M:%S)T %s\n" -1 "${line}"
+         done \
+         |tee -a br.log \
+         |grep --colour=never -E '>>>'
+       )
+    ret=${?}
+
+    d=$((SECONDS-start))
+    printf "Done in "
+    h=$((d/3600))
+    d=$((d%3600))
+    [ ${h} -eq 0 ] || { printf "%dh " ${h}; mf="02"; }
+    m=$((d/60))
+    d=$((d%60))
+    [ ${m} -eq 0 ] || { printf "%${mf}dmin " ${m}; sf="02"; }
+    printf "%${sf}ds\n" ${d}
+
+    return ${ret}
+}
+
+main "${@}"