gollvm: .gitignore: ignore .pyc files

Running/installing the gccgo wrapper may cause the creation
of .pyc files. Ignore them.

Change-Id: I6e102cd2b818c01a9943840ff9957761a11b5db0
Reviewed-on: https://go-review.googlesource.com/45933
Reviewed-by: Than McIntosh <thanm@google.com>
diff --git a/.gitignore b/.gitignore
index 2ae5eab..b127224 100644
--- a/.gitignore
+++ b/.gitignore
@@ -30,6 +30,9 @@
 *.a
 *.lib
 
+# Compiled python files
+*.pyc
+
 # Executables
 *.exe
 *.out