do not let missing sqlite build make install for cycle to abort script with error

fix is to invert the condition to be get hit by "set -e" exit on error

Author: Elan Ruusamäe <glen@delfi.ee>
--- bacula-5.0.3/src/cats/Makefile.in~	2010-10-22 14:00:55.000000000 +0300
+++ bacula-5.0.3/src/cats/Makefile.in	2010-10-22 14:00:57.433667998 +0300
@@ -133,12 +133,12 @@
 
 install: @LIBTOOL_INSTALL_TARGET@ @INCLUDE_INSTALL_TARGET@
 	for dbtype in bdb mysql postgresql sqlite3 sqlite; do \
-		[ -f create_$${dbtype}_database ] && $(INSTALL_SCRIPT) create_$${dbtype}_database $(DESTDIR)$(scriptdir)/create_$${dbtype}_database; \
-		[ -f update_$${dbtype}_tables ] && $(INSTALL_SCRIPT) update_$${dbtype}_tables $(DESTDIR)$(scriptdir)/update_$${dbtype}_tables; \
-		[ -f make_$${dbtype}_tables ] && $(INSTALL_SCRIPT) make_$${dbtype}_tables $(DESTDIR)$(scriptdir)/make_$${dbtype}_tables; \
-		[ -f grant_$${dbtype}_privileges ] && $(INSTALL_SCRIPT) grant_$${dbtype}_privileges $(DESTDIR)$(scriptdir)/grant_$${dbtype}_privileges; \
-		[ -f drop_$${dbtype}_tables ] && $(INSTALL_SCRIPT) drop_$${dbtype}_tables $(DESTDIR)$(scriptdir)/drop_$${dbtype}_tables; \
-		[ -f drop_$${dbtype}_database ] && $(INSTALL_SCRIPT) drop_$${dbtype}_database $(DESTDIR)$(scriptdir)/drop_$${dbtype}_database; \
+		[ ! -f create_$${dbtype}_database ] || $(INSTALL_SCRIPT) create_$${dbtype}_database $(DESTDIR)$(scriptdir)/create_$${dbtype}_database; \
+		[ ! -f update_$${dbtype}_tables ] || $(INSTALL_SCRIPT) update_$${dbtype}_tables $(DESTDIR)$(scriptdir)/update_$${dbtype}_tables; \
+		[ ! -f make_$${dbtype}_tables ] || $(INSTALL_SCRIPT) make_$${dbtype}_tables $(DESTDIR)$(scriptdir)/make_$${dbtype}_tables; \
+		[ ! -f grant_$${dbtype}_privileges ] || $(INSTALL_SCRIPT) grant_$${dbtype}_privileges $(DESTDIR)$(scriptdir)/grant_$${dbtype}_privileges; \
+		[ ! -f drop_$${dbtype}_tables ] || $(INSTALL_SCRIPT) drop_$${dbtype}_tables $(DESTDIR)$(scriptdir)/drop_$${dbtype}_tables; \
+		[ ! -f drop_$${dbtype}_database ] || $(INSTALL_SCRIPT) drop_$${dbtype}_database $(DESTDIR)$(scriptdir)/drop_$${dbtype}_database; \
 	done
 
 		$(INSTALL_SCRIPT) fix_postgresql_tables $(DESTDIR)$(scriptdir)/fix_postgresql_tables