tests/conv: add GSM 05.03 specific test

This change extends the convolutional code test coverage, adding
the GSM 05.03 specific test vectors, generated by the conv_gen.py.

Inspired by Tom's patch:
http://lists.osmocom.org/pipermail/openbsc/2014-April/007364.html

Change-Id: I76d1cd4032d2f74c5bb93bde4fab99aa655b7f1a
diff --git a/.gitignore b/.gitignore
index 4c6a78f..5111b25 100644
--- a/.gitignore
+++ b/.gitignore
@@ -122,6 +122,7 @@
 include/osmocom/core/crc*gen.h
 include/osmocom/core/bit*gen.h
 include/osmocom/gsm/gsm0503.h
+tests/conv/gsm0503_test_vectors.c
 
 # vi files
 *.sw?