Add ansi-c/converter_input.txt to .gitignore

Author: Lukasz A.J. Wrona

.gitignore

@@ -28,6 +28,7 @@ Release/*
 *.obj
 *.a
 *.lib
+src/ansi-c/converter_input.txt
 src/util/version.cpp
 src/ansi-c/arm_builtin_headers.inc
 src/ansi-c/clang_builtin_headers.inc