Added a tool to check for typos; added dictionaries.

utils/check-style/check-typos

@@ -0,0 +1,13 @@
+#!/usr/bin/env bash
+
+# Check for typos in code.
+
+ROOT_PATH=$(git rev-parse --show-toplevel)
+CURDIR=$(dirname "${BASH_SOURCE[0]}")
+
+codespell \
+    --skip '*generated*,*gperf*,*.bin,*.mrk*,*.idx,checksums.txt,*.dat,*.pyc,*.kate-swp' \
+    --ignore-words "${CURDIR}/codespell-ignore-words.list" \
+    --quiet-level 2 \
+    "$ROOT_PATH"/{src,base,programs,utils} \
+    $@ | grep -v -F --file="${CURDIR}/codespell-ignore-files.list"

utils/check-style/codespell-ignore-files.list

@@ -0,0 +1,9 @@
+base/common/iostream_debug_helpers.h:156
+base/common/preciseExp10.cpp:54
+base/common/preciseExp10.cpp:87
+base/common/preciseExp10.cpp:88
+base/glibc-compatibility/musl/COPYRIGHT:49
+base/glibc-compatibility/musl/COPYRIGHT:82
+base/glibc-compatibility/musl/COPYRIGHT:83
+programs/server/Server.cpp:359
+utils/github/query.py:144

utils/check-style/codespell-ignore-words.list

@@ -0,0 +1,7 @@
+thenn
+fpr
+creat
+parsering
+nd
+ect
+pullrequest