Auto merge of #2572 - micbou:update-ycmd, r=vheon

[READY] Update ycmd

Release notes:
 - PR https://github.com/Valloric/ycmd/pull/707: update racerd;
 - PR https://github.com/Valloric/ycmd/pull/709: update Tern to 0.21.0;
 - PR https://github.com/Valloric/ycmd/pull/711: fix https://github.com/Valloric/YouCompleteMe/issues/2532;
 - PR https://github.com/Valloric/ycmd/pull/717: add Visual Studio 2017 and drop Visual Studio 2012 support.

Closes #2571.

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README.md

@@ -376,8 +376,7 @@ _Windows x86-64_ for a 64-bit Vim. We recommend installing Python 3.
 - [CMake][cmake-download]. Add CMake executable to the PATH environment
 variable.
 - [Visual Studio][visual-studio-download]. Download the community edition.
-During setup, choose _Custom_ as the installation type and select the _Visual
-C++_ component.
+During setup, select _Desktop development with C++_ in _Workloads_.
 - [7-zip][7z-download]. Required to build YCM with semantic support for
 C-family languages.
 
@@ -412,8 +411,8 @@ install with all language features, ensure `msbuild`, `go`, `tsserver`, `node`,
     python install.py --all
 
 You can specify the Microsoft Visual C++ (MSVC) version using the `--msvc`
-option. YCM officially supports MSVC 11 (Visual Studio 2012), 12 (2013), and 14
-(2015).
+option. YCM officially supports MSVC 12 (Visual Studio 2013), 14 (2015), and 15
+(2017).
 
 That's it. You're done. Refer to the _User Guide_ section on how to use YCM.
 Don't forget that if you want the C-family semantic completion engine to work,
@@ -573,7 +572,7 @@ process.
     Python 3][python-win-download]. Pick the version corresponding to your Vim
     architecture. You will also need Microsoft Visual C++ (MSVC) to build YCM.
     You can obtain it by installing [Visual Studio][visual-studio-download].
-    MSVC 11 (Visual Studio 2012), 12 (2013), and 14 (2015) are officially
+    MSVC 12 (Visual Studio 2013), 14 (2015), and 15 (2017) are officially
     supported.
 
     Here we'll assume you installed YCM with Vundle. That means that the
@@ -3092,7 +3091,7 @@ This software is licensed under the [GPL v3 license][gpl].
 [TSServer]: https://github.com/Microsoft/TypeScript/tree/master/src/server
 [vim-win-download]: https://bintray.com/micbou/generic/vim
 [python-win-download]: https://www.python.org/downloads/windows/
-[visual-studio-download]: https://www.visualstudio.com/products/free-developer-offers-vs.aspx
+[visual-studio-download]: https://www.visualstudio.com/downloads/
 [7z-download]: http://www.7-zip.org/download.html
 [mono-install-osx]: http://www.mono-project.com/docs/getting-started/install/mac/
 [mono-install-ubuntu]: http://www.mono-project.com/docs/getting-started/install/linux/#debian-ubuntu-and-derivatives

appveyor.yml

@@ -1,4 +1,5 @@
 version: '{build}'
+image: Visual Studio 2017
 environment:
   COVERAGE: true
   matrix:

doc/youcompleteme.txt

@@ -576,8 +576,8 @@ Download and install the following software:
 
 - CMake [25]. Add CMake executable to the PATH environment variable.
 
-- Visual Studio [35]. Download the community edition. During setup, choose
-  _Custom_ as the installation type and select the _Visual C++_ component.
+- Visual Studio [35]. Download the community edition. During setup, select
+  _Desktop development with C++_ in _Workloads_.
 
 - 7-zip [36]. Required to build YCM with semantic support for C-family
   languages.
@@ -617,8 +617,8 @@ install with all language features, ensure 'msbuild', 'go', 'tsserver', 'node',
   python install.py --all
 <
 You can specify the Microsoft Visual C++ (MSVC) version using the '--msvc'
-option. YCM officially supports MSVC 11 (Visual Studio 2012), 12 (2013), and 14
-(2015).
+option. YCM officially supports MSVC 12 (Visual Studio 2013), 14 (2015), and 15
+(2017).
 
 That's it. You're done. Refer to the _User Guide_ section on how to use YCM.
 Don't forget that if you want the C-family semantic completion engine to work,
@@ -782,8 +782,8 @@ will notify you to recompile it. You should then rerun the install process.
    On Windows, you need to download and install Python 2 or Python 3 [34].
    Pick the version corresponding to your Vim architecture. You will also
    need Microsoft Visual C++ (MSVC) to build YCM. You can obtain it by
-   installing Visual Studio [35]. MSVC 11 (Visual Studio 2012), 12 (2013),
-   and 14 (2015) are officially supported.
+   installing Visual Studio [35]. MSVC 12 (Visual Studio 2013), 14 (2015),
+   and 15 (2017) are officially supported.
 
    Here we'll assume you installed YCM with Vundle. That means that the top-
    level YCM directory is in '~/.vim/bundle/YouCompleteMe'.
@@ -3367,7 +3367,7 @@ References ~
 [32] http://www.mono-project.com/docs/getting-started/install/linux/#centos-7-fedora-19-and-later-and-derivatives
 [33] https://bintray.com/micbou/generic/vim
 [34] https://www.python.org/downloads/windows/
-[35] https://www.visualstudio.com/products/free-developer-offers-vs.aspx
+[35] https://www.visualstudio.com/downloads/
 [36] http://www.7-zip.org/download.html
 [37] http://stackoverflow.com/questions/6319274/how-do-i-run-msbuild-from-the-command-line-using-windows-sdk-7-1
 [38] https://github.com/tpope/vim-pathogen#pathogenvim

third_party/ycmd

@@ -1 +1 @@
-Subproject commit ec7a154f8fe50c071ecd0ac6841de8a50ce92f5d
+Subproject commit 60c5bba489a24148afe501216a6a37d4fa669e15