Fix file permission
Some files were registered as executables

Change-Id: I3600122268371985bd6883734c616faa7e247d4f
diff --git a/src/main/cpp/edu_stanford_ramcloud_JRamCloud.cc b/src/main/cpp/edu_stanford_ramcloud_JRamCloud.cc
old mode 100755
new mode 100644
diff --git a/src/main/java/edu/stanford/ramcloud/JRamCloud.java b/src/main/java/edu/stanford/ramcloud/JRamCloud.java
old mode 100755
new mode 100644