Ignore files generated by Code::Blocks

Change-Id: I8a5763e8c0fbc2ce788871c18e36f2af7768832c
Reviewed-on: https://swiftshader-review.googlesource.com/2540
Tested-by: Ping-Hao Wu <pinghao@google.com>
Reviewed-by: Nicolas Capens <capn@google.com>

.gitignore

diff --git a/.gitignore b/.gitignore
index aa80b67..9798e4c 100644
--- a/.gitignore
+++ b/.gitignore
@@ -42,4 +42,6 @@
 *.sdf

 *.suo

 *.o

+*.depend

+*.layout