Update git to v2.10.2

* Fixes #735
* Import *sh completion and XSS patches from openSUSE

git/git-tclIndex.patch

@@ -0,0 +1,19 @@
+ALL_LIBFILES uses wildcard, which provides the result in directory
+order. This order depends on the underlying filesystem on the
+buildhost. To get reproducible builds it is required to sort such list
+before using them.
+---
+ git-gui/Makefile |    2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/git-gui/Makefile
++++ b/git-gui/Makefile
+@@ -259,7 +259,7 @@ lib/tclIndex: $(ALL_LIBFILES) GIT-GUI-VA
+ 	 rm -f $@ ; \
+ 	 echo '# Autogenerated by git-gui Makefile' >$@ && \
+ 	 echo >>$@ && \
+-	 $(foreach p,$(PRELOAD_FILES) $(ALL_LIBFILES),echo '$(subst lib/,,$p)' >>$@ &&) \
++	 $(foreach p,$(PRELOAD_FILES) $(sort $(ALL_LIBFILES)),echo '$(subst lib/,,$p)' >>$@ &&) \
+ 	 echo >>$@ ; \
+ 	fi
+