build/nmk: define map and newline

map is very good at generating rules.
Just map gen function to array of it's parameters.
Don't forget to eval the result.

I'll use it in feature-tests generation and in someday coming
compat 32-bit mode - in x86 makefiles.

Cc: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: Dmitry Safonov <dsafonov@virtuozzo.com>
Acked-by: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>

scripts/nmk/scripts/msg.mk

@@ -42,6 +42,17 @@ define msg-build
         $(E) "  BUILD   " $(1)
 endef
 
+define newline
+
+
+endef
+
+# map funciton:
+# $1 - func to call
+# $2 - list over which map the $1 func
+# result is divided with newlines
+map = $(foreach x,$2,$(call $1,$x)$(newline))
+
 #
 # Footer.
 $(__nmk_dir)scripts/msg.mk: