Rename spawn-polkit-agent.c to just polkit-agent.c

The functions in the file were *not* using the spawn prefix,
and the prefix seems completely unnecessary.

src/shared/main-func.h

@@ -12,10 +12,10 @@
 #include "argv-util.h"
 #include "hashmap.h"
 #include "pager.h"
+#include "polkit-agent.h"
 #include "selinux-util.h"
 #include "signal-util.h"
 #include "spawn-ask-password-agent.h"
-#include "spawn-polkit-agent.h"
 #include "static-destruct.h"
 
 #define _DEFINE_MAIN_FUNCTION(intro, impl, result_to_exit_status, result_to_return_value) \

src/shared/meson.build

@@ -140,6 +140,7 @@ shared_sources = files(
         'pe-binary.c',
         'pkcs11-util.c',
         'plymouth-util.c',
+        'polkit-agent.c',
         'pretty-print.c',
         'capsule-util.c',
         'ptyfwd.c',
@@ -160,7 +161,6 @@ shared_sources = files(
         'socket-label.c',
         'socket-netlink.c',
         'spawn-ask-password-agent.c',
-        'spawn-polkit-agent.c',
         'specifier.c',
         'switch-root.c',
         'tmpfile-util-label.c',

src/shared/polkit-agent.c

@@ -11,8 +11,8 @@
 #include "io-util.h"
 #include "log.h"
 #include "macro.h"
+#include "polkit-agent.h"
 #include "process-util.h"
-#include "spawn-polkit-agent.h"
 #include "stdio-util.h"
 #include "time-util.h"