build: rename MPLAYER_CONFDIR define

We certainly don't use the mplayer configuration dir. The name didn't
matter, but now that it's in user-visible output (as part of config.h
being dumped in verbose mode), it's a bit too strange.

old-configure

@@ -950,7 +950,7 @@ cat > $TMPC << EOF
 
 #define CONFIGURATION "$configuration"
 
-#define MPLAYER_CONFDIR "$_confdir"
+#define MPV_CONFDIR "$_confdir"
 
 /* we didn't bother to add actual config checks for this, or they are
    for platforms not supported by this configure script */

options/path.c

@@ -74,7 +74,7 @@ static int mp_add_xdg_config_dirs(struct mpv_global *global, char **dirs, int i)
     i = mp_add_macosx_bundle_dir(global, dirs, i);
 #endif
 
-    dirs[i++] = MPLAYER_CONFDIR;
+    dirs[i++] = MPV_CONFDIR;
 
     return i;
 }

waftools/generators/headers.py

@@ -39,13 +39,13 @@ def __write_version_h__(ctx):
 def __escape_c_string(s):
     return s.replace("\"", "\\\"").replace("\n", "\\n")
 
-def __add_mplayer_defines__(ctx):
+def __add_mpv_defines__(ctx):
     from sys import argv
     ctx.define("CONFIGURATION", " ".join(argv))
-    ctx.define("MPLAYER_CONFDIR", ctx.env.CONFDIR)
+    ctx.define("MPV_CONFDIR", ctx.env.CONFDIR)
     ctx.define("FULLCONFIG", "\\n" + __escape_c_string(ctx.get_config_header()) + "\\n")
 
 def configure(ctx):
-    __add_mplayer_defines__(ctx)
+    __add_mpv_defines__(ctx)
     __write_config_h__(ctx)
     __write_version_h__(ctx)