Squashed 'subtree/rabit/' content from commit c7282ac

git-subtree-dir: subtree/rabit
git-subtree-split: c7282acb2a

.gitignore

@@ -0,0 +1,36 @@
+# Compiled Object files
+*.slo
+*.lo
+*.o
+*.obj
+
+# Precompiled Headers
+*.gch
+*.pch
+*.lnk
+# Compiled Dynamic libraries
+*.so
+*.dylib
+*.dll
+
+# Fortran module files
+*.mod
+
+# Compiled Static libraries
+*.lai
+*.la
+*.a
+*.lib
+
+# Executables
+*.exe
+*.out
+*.app
+*~
+*.pyc
+*.mpi
+*.exe
+*.txt
+*tmp*
+*.rabit
+*.mock