Add GIT_COLOR_BOLD_* and GIT_COLOR_BG_*

diff --git a/RelNotes b/RelNotes
index 1cb2571eaae44b1e01fa4713c6c4b147eed9ac4a..00e77229ddadcb8a13b10b693a96bd76a4cb9f33 120000 (symlink)
--- a/RelNotes
+++ b/RelNotes
@@ -1 +1 @@
-Documentation/RelNotes-1.6.5.2.txt
\ No newline at end of file
+Documentation/RelNotes-1.7.1.txt
\ No newline at end of file