patchtest: Add tests from patchtest oe repo

Copy the core components of the patchtest-oe repo into
meta/lib/patchtest in oe-core.

(From OE-Core rev: 257f64f4e4414b78981104aec132b067beb5a92a)

Signed-off-by: Trevor Gamblin <tgamblin@baylibre.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/lib/patchtest/tests/pyparsing/common.py

@@ -0,0 +1,26 @@
+# common pyparsing variables
+#
+# Copyright (C) 2016 Intel Corporation
+#
+# SPDX-License-Identifier: GPL-2.0
+
+import pyparsing
+
+# general
+colon = pyparsing.Literal(":")
+start = pyparsing.LineStart()
+end   = pyparsing.LineEnd()
+at = pyparsing.Literal("@")
+lessthan = pyparsing.Literal("<")
+greaterthan = pyparsing.Literal(">")
+opensquare = pyparsing.Literal("[")
+closesquare = pyparsing.Literal("]")
+inappropriate = pyparsing.CaselessLiteral("Inappropriate")
+submitted = pyparsing.CaselessLiteral("Submitted")
+
+# word related
+nestexpr = pyparsing.nestedExpr(opener='[', closer=']')
+inappropriateinfo = pyparsing.Literal("Inappropriate") + nestexpr
+submittedinfo = pyparsing.Literal("Submitted") + nestexpr
+word = pyparsing.Word(pyparsing.alphas)
+worddot = pyparsing.Word(pyparsing.alphas+".")