Squashed 'vendor/github.com/leethomason/tinyxml2/' changes from 02d27…

…64f..37bc3aca

REVERT: 02d2764f Merge pull request vgough#593 from Dmitry-Me/testDeletionViaDocument
REVERT: 8d1bfbbf Merge pull request vgough#592 from Dmitry-Me/clarifyTestOutput
REVERT: 15295807 Merge pull request vgough#591 from Dmitry-Me/properIndentDirectives
REVERT: 48725fa8 Merge pull request vgough#590 from Dmitry-Me/betterVariableName
REVERT: e5790dba Test nodes deletion via document
REVERT: 6f4c4e72 Clarify and simplify test output
REVERT: de381df3 Indent directives consistently with surrounding code
REVERT: effab6ff Better variable name
REVERT: f3f9925f update docs
REVERT: aca4fb16 new docs
REVERT: 528986ff update readme
REVERT: 75737563 add docs
REVERT: 646af8d2 Merge pull request vgough#582 from Dmitry-Me/distinctDefaultAndReplacement
REVERT: 05705801 Merge pull request vgough#581 from Dmitry-Me/testQueryingAttributesBetter
REVERT: 80379a33 Merge pull request vgough#580 from Dmitry-Me/checkLoadSaveResult
REVERT: bf9b3a26 remove code that creates directory. add file in out directory so that git creates the directory
REVERT: 3d20c5de Use distinct values as default and replacement values
REVERT: 2087a276 Test querying attributes thoroughly
REVERT: 46b70ce5 Check result of LoadFile()/SaveFile()
REVERT: 3a6e51a1 fix build issue
REVERT: e4dc7218 fix an issue on windows
REVERT: fc2a0017 Merge pull request vgough#578 from Dmitry-Me/checkReadingResults
REVERT: cd336999 Merge pull request vgough#577 from Dmitry-Me/checkParseResult
REVERT: 7096e779 Merge pull request vgough#573 from kbinny62/master
REVERT: d1b82825 Check various stages of reading the XML file
REVERT: 68578f47 Check result of Parse() call
REVERT: c1f1de72 Merge pull request vgough#575 from Dmitry-Me/extractDuplicatedString
REVERT: 5d1aec10 Extract duplicated text string
REVERT: 9720fbaf xmltest.cpp: path separator is '\\' under WIN32
REVERT: bf29a152 xmltest: create dir resources/out to avoid crashes

git-subtree-dir: vendor/github.com/leethomason/tinyxml2
git-subtree-split: 37bc3aca429f0164adf68c23444540b4a24b5778