Merge branch 'master' into jc/diff

* master:
  Make "--parents" logs also be incremental
  Retire diffcore-pathspec.
  Improve the git-diff-tree -c/-cc documentation

diff --cc Makefile
index b2721469a70bacd7c0637aa8f1bd36ec57e18355,a979205ec589fe135d62673e2ae4a6f6cbe1dd57..34a8c14d551c7dd5cf49fd593cb4d12f72d1f6e9
--- 1/Makefile
--- 2/Makefile
+++ b/Makefile
@@@ -194,12 -194,12 +194,12 @@@ LIB_H = 
        blob.h cache.h commit.h csum-file.h delta.h \
        diff.h object.h pack.h pkt-line.h quote.h refs.h \
        run-command.h strbuf.h tag.h tree.h git-compat-util.h revision.h \
 -      tree-walk.h
 +      tree-walk.h log-tree.h
  
  DIFF_OBJS = \
-       diff.o diffcore-break.o diffcore-order.o diffcore-pathspec.o \
+       diff.o diffcore-break.o diffcore-order.o \
        diffcore-pickaxe.o diffcore-rename.o tree-diff.o combine-diff.o \
 -      diffcore-delta.o
 +      diffcore-delta.o log-tree.o
  
  LIB_OBJS = \
        blob.o commit.o connect.o csum-file.o \