Merge branch 'refs/heads/t/build_system'

Cooking for more than a month.

* t/build_system:
  Add message to target maintainer-clean.
  Use git version for tarball and AC_INIT().
  Run autom4te instead of autoconf.
  Remove depend.sh.
  Simplify make clean.
  Do not create .d files for gengetopt source files.
  Introduce cmdlist_dir.
  Remove pointless autoconf checks.
  Avoid excessive dep generation on Makefile changes.
  Add -Wformat to STRICT_CFLAGS.
  Compile with -Wall -Wunused only on linux.
  Separate CPPFLAGS and CFLAGS.
  Rename DEBUG_CPPFLAGS to STRICT_CFLAGS.
  Only compile with osl_cppflags where necessary.
  Remove pointless -r option to cp for target tarball.
  Make tarball commands quiet.
  Do not opencode $(tarball).
  Run tr only once in configure.ac.
  Silence ggo_descriptions_declared command.
  Call AC_CONFIG_HEADERS rather than AM_CONFIG_HEADER.
  Remove duplicate -Wno-unused-function.
  Honor --with-xxx-headers also for dependencies.

diff --combined NEWS
index 82e0f0d5b495b1eb4badfd19407cb30a5d35a18b,305d9147b2f0be1a3f02697be4a769fed2024449..87337d1c0b18b969e3d231a79aef2353ae6d68a6
--- 1/NEWS
--- 2/NEWS
+++ b/NEWS
@@@ -5,13 -5,12 +5,16 @@@ NEW
  0.5.4 (to be announced) "exponential alignment"
  -----------------------------------------------
  
++Another cleanup and bugfix release.
++
        - Minor cleanups to daemon.c.
        - New URLs for home page and git services.
        - Improved error diagnostics for the mvblob commands.
        - New sender subcommand: status.
        - Improved help text for server and afs commands.
        - audiod memory leak fixes.
++      - Miscellaneous improvements to the build system.
 +      - oss_writer improvements.
  
  Download: ./releases/paraslash-git.tar.bz2
  

diff --combined play.c
index ed1c6fefb84a060458714b77388e79183bdca762,5e8c1cfcf2ab346abea56ae0c009b73a727232b3..90207520f5dc1eb21c38c706cf0bd8384de83e69
--- 1/play.c
--- 2/play.c
+++ b/play.c
@@@ -633,7 -633,7 +633,7 @@@ static char **get_mapped_keyseqs(void
        return result;
  }
  
- #include "play_completion.h"
+ #include "play.completion.h"
  
  
  /* defines one command of para_play */
@@@ -645,11 -645,11 +645,11 @@@ struct pp_command 
        const char *help;
  };
  
- #include "play_command_list.h"
+ #include "play.command_list.h"
  static struct pp_command pp_cmds[] = {DEFINE_PLAY_CMD_ARRAY};
  #define FOR_EACH_COMMAND(c) for (c = 0; pp_cmds[c].name; c++)
  
- #include "play_completion.h"
+ #include "play.completion.h"
  static struct i9e_completer pp_completers[];
  
  I9E_DUMMY_COMPLETER(jmp);
@@@ -872,7 -872,6 +872,7 @@@ static int com_prev(struct play_task *p
        kill_stream(pt);
        pt->next_file = ret;
        pt->rq = CRT_FILE_CHANGE;
 +      pt->start_chunk = 0;
        return 0;
  }
  
@@@ -888,7 -887,6 +888,7 @@@ static int com_next(struct play_task *p
        kill_stream(pt);
        pt->next_file = ret;
        pt->rq = CRT_FILE_CHANGE;
 +      pt->start_chunk = 0;
        return 0;
  }