[libsigc++2] Update .gitignore files

[Kjell Ahlstedt <kjellahl src gnome org>]

commit 331d1c16c2f4ad0a7090e3dc5d08204a0c4e8d91
Author: Kjell Ahlstedt <kjell ahlstedt bredband net>
Date:   Sun Oct 27 16:01:11 2013 +0100

    Update .gitignore files
    
    * build/.gitignore:
    * tests/.gitignore: Ignore files generated by automake 1.13 and 'make check'.

 build/.gitignore |    1 +
 tests/.gitignore |    2 ++
 2 files changed, 3 insertions(+), 0 deletions(-)
---
diff --git a/build/.gitignore b/build/.gitignore
index 8051982..58009a5 100644
--- a/build/.gitignore
+++ b/build/.gitignore
@@ -10,3 +10,4 @@
 /lt*.m4
 /ltmain.sh
 /missing
+/test-driver
diff --git a/tests/.gitignore b/tests/.gitignore
index dfc65dd..ce542d3 100644
--- a/tests/.gitignore
+++ b/tests/.gitignore
@@ -1,3 +1,5 @@
+/*.log
+/*.trs
 /test_accumulated
 /test_accum_iter
 /test_bind