install user:grp perms [patch 679703 -Detlef Boehm]

git-svn-id: https://nagiosplug.svn.sourceforge.net/svnroot/nagiosplug/nagiosplug/trunk@288 f882894a-f735-0410-b71e-b25c423dba1c

plugins-scripts/Makefile.am

@@ -21,6 +21,8 @@ test:
 
 CLEANFILES=$(libexec_SCRIPTS)
 
+AM_INSTALL_PROGRAM_FLAGS=@INSTALL_OPTS@
+
 .pl :
 	$(AWK) -f ./subst $< > $@
 	chmod +x $@