mvn.sh: Use bazel-bin instead of bazel-genfiles

Recent bazel versions put the output in bazel-bin. The bazel-genfiles
will only exist if it was symlinked to bazel-bin by an earlier version.

Change-Id: I3244e8caaa45c868116d2468da7b556ec5b5b2dd

.gitignore

diff --git a/.gitignore b/.gitignore
index 3aae328..7ad27e1 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,7 +1,6 @@
 /.settings
 /.apt_generated
 /bazel-bin
-/bazel-genfiles
 /bazel-out
 /bazel-prolog-cafe
 /bazel-testlogs

mvn.sh

diff --git a/mvn.sh b/mvn.sh
index ed9c213..89142b6 100755
--- a/mvn.sh
+++ b/mvn.sh
@@ -53,4 +53,4 @@
   { echo "bazel failed to build gen_${command}. Use VERBOSE=1 for more info" ; exit 1 ; }
 
 export OUTPUT_BASE=`bazel info output_base`
-./bazel-genfiles/${command}.sh
+./bazel-bin/${command}.sh