[source] libreadline: set ABI_VERSION to force rebuild of dependent packages

[LEDE Commits]

nbd pushed a commit to source.git, branch master:
https://git.lede-project.org/70af3bfd57a67805c1f34a584492e5754fee8497

commit 70af3bfd57a67805c1f34a584492e5754fee8497
Author: Felix Fietkau <nbd at nbd.name>
AuthorDate: Wed Oct 19 20:26:16 2016 +0200

    libreadline: set ABI_VERSION to force rebuild of dependent packages
    
    Signed-off-by: Felix Fietkau <nbd at nbd.name>
---
 package/libs/libreadline/Makefile | 1 +
 1 file changed, 1 insertion(+)

diff --git a/package/libs/libreadline/Makefile b/package/libs/libreadline/Makefile
index a281237..5b0ca83 100644
--- a/package/libs/libreadline/Makefile
+++ b/package/libs/libreadline/Makefile
@@ -29,6 +29,7 @@ define Package/libreadline
   CATEGORY:=Libraries
   TITLE:=Command lines edition library
   URL:=http://cnswww.cns.cwru.edu/php/chet/readline/rltop.html
+  ABI_VERSION:=$(PKG_VERSION)
 endef
 
 define Package/libreadline/description