tmpfiles: refactor into separate executable

The tmpfiles.d spec has proven useful in systemd, enough so that some developers
are starting to ship tmpfiles.d configuration files with their software.
By splitting the tmpfiles functionality in finit out into a separate executable
we are providing a useful piece of software that package managers can hook into.

src/Makefile.am

@@ -8,7 +8,7 @@ AM_LDFLAGS         = -export-dynamic
 endif
 
 sbin_PROGRAMS        = finit initctl
-pkglibexec_PROGRAMS  = getty logit runparts
+pkglibexec_PROGRAMS  = getty logit runparts tmpfiles
 if SULOGIN
 pkglibexec_PROGRAMS += sulogin
 endif
@@ -43,6 +43,13 @@ sulogin_SOURCES      = sulogin.c
 sulogin_CFLAGS       = -W -Wall -Wextra -std=gnu99
 sulogin_LDADD        = -lcrypt
 
+tmpfiles_SOURCES     = tmpfiles.c helpers.c util.c exec.c log.c \
+											 svc.c sig.c sm.c api.c mount.c service.c schedule.c cond.c cond-w.c pid.c plugin.c \
+											 utmp-api.c client.c cgroup.c mdadm.c tty.c iwatch.c conf.c devmon.c logrotate.c
+tmpfiles_CFLAGS      = -W -Wall -Wextra -std=gnu99 -D__FINIT__
+tmpfiles_CFLAGS     += $(lite_CFLAGS) $(uev_CFLAGS)
+tmpfiles_LDADD       = $(lite_LIBS) $(uev_LIBS)
+
 logit_SOURCES        = logit.c logrotate.c
 logit_CFLAGS         = -W -Wall -Wextra -Wno-unused-parameter -std=gnu99
 logit_CFLAGS        += $(lite_CFLAGS)
@@ -66,7 +73,6 @@ finit_SOURCES      = api.c	cgroup.c	cgroup.h	\
 		     sig.c	sig.h				\
 		     sm.c	sm.h				\
 		     svc.c	svc.h				\
-		     tmpfiles.c	tmpfiles.h			\
 		     tty.c	tty.h				\
 		     util.c	util.h				\
 		     utmp-api.c	utmp-api.h