prepare allman style (#5774)

tests/restyle.sh

@@ -0,0 +1,19 @@
+#!/bin/sh
+
+set -e
+
+org=$(cd ${0%/*}; pwd)
+cd ${org}/..
+pwd
+test -d cores/esp8266
+test -d libraries
+
+# in a near future, restyle-all.sh will be renamed to restyle.sh
+# and will be checked against CI
+
+for d in libraries; do
+	find $d -name "*.ino" -exec \
+	    astyle \
+	        --suffix=none \
+                --options=${org}/astyle_examples.conf {} \;
+done