- update bullet library to 2.81

git-svn-id: https://jmonkeyengine.googlecode.com/svn/trunk@10681 75d07b2b-3a1a-0410-a2c5-0572b91ccdca

engine/nbproject/bullet-native.properties

@@ -8,8 +8,8 @@ bullet.library.version=0.9
 ndk.dir=/Users/normenhansen/Documents/Code-Import/android-ndk-r7
 
 # change if bullet version changes
-bullet.folder=../bullet-2.80-rev2531
-bullet.download=http://bullet.googlecode.com/files/bullet-2.80-rev2531.zip
+bullet.folder=../bullet-2.81-rev2613
+bullet.download=https://bullet.googlecode.com/files/bullet-2.81-rev2613.zip
 
 # compile options
 bullet.compile.debug=false