[vte] build: Ignore everything in the build directory

[Christian Persch <chpe src gnome org>]

commit 1817fb8f8ffbb3f3fce81e448968c9de28287bb1
Author: Christian Persch <chpe src gnome org>
Date:   Mon Apr 15 18:44:27 2019 +0200

    build: Ignore everything in the build directory
    
    That makes 'git status' omit the build dir, in case it is inside the
    git checkout.

 meson.build | 9 +++++++++
 1 file changed, 9 insertions(+)
---
diff --git a/meson.build b/meson.build
index 61539b74..ccd70a7d 100644
--- a/meson.build
+++ b/meson.build
@@ -381,6 +381,15 @@ configure_file(
   configuration: makefile_conf,
 )
 
+# .gitignore everything in the build directory
+
+configure_file(
+  output: '.gitignore',
+  command: ['echo', '**/**',],
+  capture: true,
+  install: false,
+)
+
 # Summary
 
 output = '\n'