On a second thought, rename block_shutdown plugin to systemd_inhibit

- This is highly systemd-specific functionality so it makes sense to
  name the plugin in a way that makes it (more) obvious. No other
  changes besides renaming.

macros.in

@@ -1031,7 +1031,7 @@ done \
 %__collection_sepolicy_flags	1
 
 # Transaction plugin macros
-%__transaction_block_shutdown	%{__plugindir}/block_shutdown.so
+%__transaction_systemd_inhibit	%{__plugindir}/systemd_inhibit.so
 
 #------------------------------------------------------------------------------
 # Macros for further automated spec %setup and patch application

plugins/Makefile.am

@@ -26,8 +26,8 @@ plugins_LTLIBRARIES += sepolicy.la
 endif
 
 if DBUS
-block_shutdown_la_SOURCES = block_shutdown.c
-block_shutdown_la_CPPFLAGS = $(AM_CPPFLAGS) @DBUS_CFLAGS@
-block_shutdown_la_LIBADD = $(top_builddir)/lib/librpm.la $(top_builddir)/rpmio/librpmio.la @DBUS_LIBS@
-plugins_LTLIBRARIES += block_shutdown.la
+systemd_inhibit_la_SOURCES = systemd_inhibit.c
+systemd_inhibit_la_CPPFLAGS = $(AM_CPPFLAGS) @DBUS_CFLAGS@
+systemd_inhibit_la_LIBADD = $(top_builddir)/lib/librpm.la $(top_builddir)/rpmio/librpmio.la @DBUS_LIBS@
+plugins_LTLIBRARIES += systemd_inhibit.la
 endif