config: rename `git_etc_config()`

The `git_etc_gitconfig()` function retrieves the system-level path of
the configuration file. We're about to introduce a way to override it
via an environment variable, at which point the name of this function
would start to become misleading.

Rename the function to `git_system_config()` as a preparatory step.
While at it, the function is also refactored to pass memory ownership to
the caller. This is done to better match semantics of
`git_global_config()`, which is going to be introduced in the next
commit.

Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/config.h b/config.h
index 19a9adb..2be8fa1 100644
--- a/config.h
+++ b/config.h
@@ -318,7 +318,6 @@ int git_config_rename_section(const char *, const char *);
 int git_config_rename_section_in_file(const char *, const char *, const char *);
 int git_config_copy_section(const char *, const char *);
 int git_config_copy_section_in_file(const char *, const char *, const char *);
-const char *git_etc_gitconfig(void);
 int git_env_bool(const char *, int);
 unsigned long git_env_ulong(const char *, unsigned long);
 int git_config_system(void);
@@ -327,6 +326,8 @@ int config_error_nonbool(const char *);
 #define config_error_nonbool(s) (config_error_nonbool(s), const_error())
 #endif
 
+char *git_system_config(void);
+
 int git_config_parse_parameter(const char *, config_fn_t fn, void *data);
 
 enum config_scope current_config_scope(void);