[oe] [meta-java][PATCH] java-library: make easy to override jar package name

[Nicola Lunghi]

define JARFILENAME and ALTJARFILENAMES with ?= to make simple
to override them

Signed-off-by: Nicola Lunghi <nick83ola at gmail.com>
---
 classes/java-library.bbclass | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/classes/java-library.bbclass b/classes/java-library.bbclass
index ce1cd28..c69cf6b 100644
--- a/classes/java-library.bbclass
+++ b/classes/java-library.bbclass
@@ -42,10 +42,10 @@ PACKAGES += "${JPN}"
 FILES_${JPN} = "${datadir_java}"
 
 # File name of the libraries' main Jar file
-JARFILENAME = "${BP}.jar"
+JARFILENAME ?= "${BP}.jar"
 
 # Space-separated list of alternative file names.
-ALTJARFILENAMES = "${BPN}.jar"
+ALTJARFILENAMES ?= "${BPN}.jar"
 
 # Java "source" distributions often contain precompiled things
 # we want to delete first.
-- 
2.19.1