e2scrub: add service (cron, systemd) support

Add the ability to run the e2scrub utilities as a periodically scheduled
system service.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
diff --git a/MCONFIG.in b/MCONFIG.in
index adeb5bd..ee83554 100644
--- a/MCONFIG.in
+++ b/MCONFIG.in
@@ -32,9 +32,14 @@
 infodir = @infodir@
 datadir = @datadir@
 pkgconfigdir = $(libdir)/pkgconfig
+pkglibdir = $(libdir)/e2fsprogs
 
 HAVE_UDEV = @have_udev@
 UDEV_RULES_DIR = @pkg_udev_rules_dir@
+HAVE_CROND = @have_crond@
+CROND_DIR = @crond_dir@
+HAVE_SYSTEMD = @have_systemd@
+SYSTEMD_SYSTEM_UNIT_DIR = @systemd_system_unit_dir@
 
 @SET_MAKE@