maps: use uniform lifecycle management functions

Currently, the lifecycle functions for maps (allocation, deallocation, resize)
are not named in a uniform way and do not have a uniform function signature.
Rename the functions to fix that, and stick to libgit2's naming scheme of saying
`git_foo_new`. This results in the following new interface for allocation:

- `int git_<t>map_new(git_<t>map **out)` to allocate a new map, returning an
  error code if we ran out of memory

- `void git_<t>map_free(git_<t>map *map)` to free a map

- `void git_<t>map_clear(git<t>map *map)` to remove all entries from a map

This commit also fixes all existing callers.

1 files changed, 2 insertions, 2 deletions

diff --git a/src/attrcache.c b/src/attrcache.c
index cb8a4a4e9..6d241e4a5 100644
--- a/src/attrcache.c
+++ b/src/attrcache.c
@@ -400,8 +400,8 @@ int git_attr_cache__init(git_repository *repo)
 	/* allocate hashtable for attribute and ignore file contents,
 	 * hashtable for attribute macros, and string pool
 	 */
-	if ((ret = git_strmap_alloc(&cache->files)) < 0 ||
-		(ret = git_strmap_alloc(&cache->macros)) < 0)
+	if ((ret = git_strmap_new(&cache->files)) < 0 ||
+	    (ret = git_strmap_new(&cache->macros)) < 0)
 		goto cancel;
 
 	git_pool_init(&cache->pool, 1);