Merge branch 'sh/enable-preloadindex'

* sh/enable-preloadindex:
environment.c: enable core.preloadindex by default

diff --cc Documentation/config.txt
Simple merge

diff --cc environment.c
index c648ac3d3af1f86889ccc34e7f794683bd1951ea,1c686c9095bc82a056a2e0e5f085b6992cb4c3b0..4dac5e9edd75499ccf52debc847807d2fc180730
--- 1/environment.c
--- 2/environment.c
+++ b/environment.c
@@@ -69,10 -69,9 +69,10 @@@ unsigned long pack_size_limit_cfg
   * that is subject to stripspace.
   */
  char comment_line_char = '#';
 +int auto_comment_line_char;
  
  /* Parallel index stat data preload? */
- int core_preload_index = 0;
+ int core_preload_index = 1;
  
  /* This is set by setup_git_dir_gently() and/or git_default_config() */
  char *git_work_tree_cfg;