cquery 20180302 (new formula)

Closes #25911.

Signed-off-by: FX Coudert <fxcoudert@gmail.com>

Formula/cquery.rb

@@ -0,0 +1,18 @@
+class Cquery < Formula
+  desc "C/C++ language server"
+  homepage "https://github.com/cquery-project/cquery"
+  # pull from git tag to get submodules
+  url "https://github.com/cquery-project/cquery.git", :tag => "v20180302",
+                                                      :revision => "f3e9e756e182b122bef8826a77047f6ccf5529b6"
+  head "https://github.com/cquery-project/cquery.git"
+
+  def install
+    system "./waf", "configure", "--prefix=#{prefix}"
+    system "./waf", "build"
+    system "./waf", "install"
+  end
+
+  test do
+    system bin/"cquery", "--test-unit"
+  end
+end