Rename .tools to .mystools for Arduino IDE 2 (#688)

* The Arduino IDE considers the .tools directory
 special and warns if it finds .tools the repo
 * Added detection of .tools directory rename
 * Corrected README errata

References #672

.mystools/cppcheck/config/avr.xml

@@ -0,0 +1,17 @@
+<?xml version="1"?>
+<platform>
+	<char_bit>8</char_bit>
+	<default-sign>signed</default-sign>
+	<sizeof>
+		<short>2</short>
+		<int>2</int>
+		<long>4</long>
+		<long-long>8</long-long>
+		<float>4</float>
+		<double>4</double>
+		<long-double>8</long-double>
+		<pointer>2</pointer>
+		<size_t>2</size_t>
+		<wchar_t>2</wchar_t>
+	</sizeof>
+</platform>

.mystools/cppcheck/config/includes.cfg

@@ -0,0 +1,4 @@
+.
+drivers/Linux
+drivers/AES
+drivers/RPi

.mystools/cppcheck/config/suppressions.cfg

@@ -0,0 +1,5 @@
+toomanyconfigs
+missingInclude
+missingIncludeSystem
+ConfigurationNotChecked
+unmatchedSuppression

.mystools/cppcheck/options.sh

@@ -0,0 +1,12 @@
+#!/bin/bash
+
+OPTIONS="--quiet                                      \
+	--error-exitcode=1                                  \
+	--force                                             \
+	--enable=style,information                          \
+	--library=avr                                       \
+	--platform="${TOOLCONFIG}"/avr.xml                  \
+ 	--includes-file="${TOOLCONFIG}"/includes.cfg	      \
+	--suppressions-list="${TOOLCONFIG}"/suppressions.cfg"
+
+echo $OPTIONS

.mystools/cppcheck/run.sh

@@ -0,0 +1,19 @@
+#!/bin/bash
+
+# Instantiate the tool runtime shim
+. "$(git mystoolspath).bundle_runtime.sh"
+
+# cppcheck takes one or more files as an argument.
+# --cached or <no arg> for changed
+if [[ $# = 0 ]]; then
+	for file in $(modifiedSourceFiles); do
+		runBundle $file
+	done
+elif [[ $1 = '--cached' ]]; then
+	for file in $(stagedSourceFiles); do
+		runBundle $file
+	done
+else
+	eval "set -- $(git rev-parse --sq --prefix "$GIT_PREFIX" "$@")"
+	runBundle "$@"
+fi