Gmake doesn't like newline in macro expansion result.

When $(call func) in the makefile text expansion includes newline, gmake
reports error "missing separator". But it's fine if the expansion includes
only spaces. That's a bit odd.
This change fixes the "missing separator".

Change-Id: I094e5ae1725699ebfa4ed66544eef037dd68714c
diff --git a/core/definitions.mk b/core/definitions.mk
index 89ffcf7..19365ca 100644
--- a/core/definitions.mk
+++ b/core/definitions.mk
@@ -1960,7 +1960,7 @@
 
 ## Define a rule which generates .jar.toc and mark it as .KATI_RESTAT.
 define define-jar-to-toc-rule
-$(eval $(call _transform-jar-to-toc,$1))
+$(eval $(call _transform-jar-to-toc,$1))\
 $(eval .KATI_RESTAT: $1.toc)
 endef