Add 'compile' to the git ignore list.

This is another script generated by the autotools build.
diff --git a/.gitignore b/.gitignore
index b79695a..b7bcdce 100644
--- a/.gitignore
+++ b/.gitignore
@@ -4,6 +4,7 @@
 autom4te.cache
 *.kdevelop.pcs
 *.kdevses
+compile
 config.guess
 config.h
 config.h.in
@@ -49,4 +50,4 @@
 silk/float/x64
 src/Debug
 src/Release
-src/x64
\ No newline at end of file
+src/x64