Make binaries executable

Split InstallFileName into InstallExecutable that does chmod +x
after copying the file.  Also remove InstallFile and rename
InstallFileName to InstallFile.

Test: m -j checkbuild
Change-Id: Id41ad4eafe521f6cd5d8cc250b7747ecb3da8dfc
diff --git a/java/app.go b/java/app.go
index ceb7791..a0c4912 100644
--- a/java/app.go
+++ b/java/app.go
@@ -150,7 +150,7 @@
 	}
 
 	a.outputFile = CreateAppPackage(ctx, aaptPackageFlags, a.outputFile, certificates)
-	ctx.InstallFileName(android.PathForModuleInstall(ctx, "app"), ctx.ModuleName()+".apk", a.outputFile)
+	ctx.InstallFile(android.PathForModuleInstall(ctx, "app"), ctx.ModuleName()+".apk", a.outputFile)
 }
 
 var aaptIgnoreFilenames = []string{