Merge branch 'mm/credential-plumbing'

Expose the credential API to scripted Porcelain writers.

* mm/credential-plumbing:
git-remote-mediawiki: update comments to reflect credential support
git-remote-mediawiki: add credential support
git credential fill: output the whole 'struct credential'
add 'git credential' plumbing command

diff --combined Makefile
index ae62a50bc5f5b10bf66754ebfd857c964553c3f9,d5d46d9304043da4ce0a4acd3898f6e9216f2870..169dda5453c38a9a7ab1ac7e49ac6a0a200bfa0f
--- 1/Makefile
--- 2/Makefile
+++ b/Makefile
@@@ -158,9 -158,6 +158,9 @@@ all:
  # Define NO_PREAD if you have a problem with pread() system call (e.g.
  # cygwin1.dll before v1.5.22).
  #
 +# Define NO_THREAD_SAFE_PREAD if your pread() implementation is not
 +# thread-safe. (e.g. compat/pread.c or cygwin)
 +#
  # Define NO_FAST_WORKING_DIRECTORY if accessing objects in pack files is
  # generally faster on your platform than accessing the working directory.
  #
@@@ -206,6 -203,8 +206,6 @@@
  # Define NO_ST_BLOCKS_IN_STRUCT_STAT if your platform does not have st_blocks
  # field that counts the on-disk footprint in 512-byte blocks.
  #
 -# Define ASCIIDOC7 if you want to format documentation with AsciiDoc 7
 -#
  # Define DOCBOOK_XSL_172 if you want to format man pages with DocBook XSL v1.72
  # (not v1.73 or v1.71).
  #
@@@ -488,7 -487,6 +488,6 @@@ X 
  PROGRAMS += $(patsubst %.o,git-%$X,$(PROGRAM_OBJS))
  
  TEST_PROGRAMS_NEED_X += test-chmtime
- TEST_PROGRAMS_NEED_X += test-credential
  TEST_PROGRAMS_NEED_X += test-ctype
  TEST_PROGRAMS_NEED_X += test-date
  TEST_PROGRAMS_NEED_X += test-delta
@@@ -836,6 -834,7 +835,7 @@@ BUILTIN_OBJS += builtin/commit-tree.
  BUILTIN_OBJS += builtin/commit.o
  BUILTIN_OBJS += builtin/config.o
  BUILTIN_OBJS += builtin/count-objects.o
+ BUILTIN_OBJS += builtin/credential.o
  BUILTIN_OBJS += builtin/describe.o
  BUILTIN_OBJS += builtin/diff-files.o
  BUILTIN_OBJS += builtin/diff-index.o
@@@ -1062,7 -1061,6 +1062,7 @@@ ifeq ($(uname_O),Cygwin
                NO_IPV6 = YesPlease
                OLD_ICONV = UnfortunatelyYes
        endif
 +      NO_THREAD_SAFE_PREAD = YesPlease
        NEEDS_LIBICONV = YesPlease
        NO_FAST_WORKING_DIRECTORY = UnfortunatelyYes
        NO_TRUSTABLE_FILEMODE = UnfortunatelyYes
@@@ -1672,10 -1670,6 +1672,10 @@@ endi
  ifdef NO_PREAD
        COMPAT_CFLAGS += -DNO_PREAD
        COMPAT_OBJS += compat/pread.o
 +      NO_THREAD_SAFE_PREAD = YesPlease
 +endif
 +ifdef NO_THREAD_SAFE_PREAD
 +      BASIC_CFLAGS += -DNO_THREAD_SAFE_PREAD
  endif
  ifdef NO_FAST_WORKING_DIRECTORY
        BASIC_CFLAGS += -DNO_FAST_WORKING_DIRECTORY
@@@ -1851,6 -1845,10 +1851,6 @@@ ifndef 
  endif
  endif
  
 -ifdef ASCIIDOC7
 -      export ASCIIDOC7
 -endif
 -
  ifdef NO_INSTALL_HARDLINKS
        export NO_INSTALL_HARDLINKS
  endif

diff --combined builtin.h
index b6cbbc9afdac7894c0d3b255fab359d208db9bc0,a945a4a74c0b87cf5f679f1e0a753fa62cd731a5..ba6626b03505dd0622faea4e2bea51ed4b6720f5
--- 1/builtin.h
--- 2/builtin.h
+++ b/builtin.h
@@@ -40,8 -40,6 +40,8 @@@ int copy_note_for_rewrite(struct notes_
  void finish_copy_notes_for_rewrite(struct notes_rewrite_cfg *c);
  
  extern int check_pager_config(const char *cmd);
 +struct diff_options;
 +extern void setup_diff_pager(struct diff_options *);
  
  extern int textconv_object(const char *path, unsigned mode, const unsigned char *sha1, char **buf, unsigned long *buf_size);
  
@@@ -67,6 -65,7 +67,7 @@@ extern int cmd_commit(int argc, const c
  extern int cmd_commit_tree(int argc, const char **argv, const char *prefix);
  extern int cmd_config(int argc, const char **argv, const char *prefix);
  extern int cmd_count_objects(int argc, const char **argv, const char *prefix);
+ extern int cmd_credential(int argc, const char **argv, const char *prefix);
  extern int cmd_describe(int argc, const char **argv, const char *prefix);
  extern int cmd_diff_files(int argc, const char **argv, const char *prefix);
  extern int cmd_diff_index(int argc, const char **argv, const char *prefix);
@@@ -84,6 -83,7 +85,6 @@@ extern int cmd_get_tar_commit_id(int ar
  extern int cmd_grep(int argc, const char **argv, const char *prefix);
  extern int cmd_hash_object(int argc, const char **argv, const char *prefix);
  extern int cmd_help(int argc, const char **argv, const char *prefix);
 -extern int cmd_http_fetch(int argc, const char **argv, const char *prefix);
  extern int cmd_index_pack(int argc, const char **argv, const char *prefix);
  extern int cmd_init_db(int argc, const char **argv, const char *prefix);
  extern int cmd_log(int argc, const char **argv, const char *prefix);
@@@ -108,6 -108,7 +109,6 @@@ extern int cmd_notes(int argc, const ch
  extern int cmd_pack_objects(int argc, const char **argv, const char *prefix);
  extern int cmd_pack_redundant(int argc, const char **argv, const char *prefix);
  extern int cmd_patch_id(int argc, const char **argv, const char *prefix);
 -extern int cmd_pickaxe(int argc, const char **argv, const char *prefix);
  extern int cmd_prune(int argc, const char **argv, const char *prefix);
  extern int cmd_prune_packed(int argc, const char **argv, const char *prefix);
  extern int cmd_push(int argc, const char **argv, const char *prefix);
@@@ -140,6 -141,7 +141,6 @@@ extern int cmd_update_ref(int argc, con
  extern int cmd_update_server_info(int argc, const char **argv, const char *prefix);
  extern int cmd_upload_archive(int argc, const char **argv, const char *prefix);
  extern int cmd_upload_archive_writer(int argc, const char **argv, const char *prefix);
 -extern int cmd_upload_tar(int argc, const char **argv, const char *prefix);
  extern int cmd_var(int argc, const char **argv, const char *prefix);
  extern int cmd_verify_tag(int argc, const char **argv, const char *prefix);
  extern int cmd_version(int argc, const char **argv, const char *prefix);