Merge branch 'master' (early part) into pd/bash-4-completion

* 'master' (early part): (529 commits)
  completion: fix zsh check under bash with 'set -u'
  Fix copy-pasted comments related to tree diff handling.
  Git 1.7.3.2
  {cvs,svn}import: use the new 'git read-tree --empty'
  t/t9001-send-email.sh: fix stderr redirection in 'Invalid In-Reply-To'
  Clarify and extend the "git diff" format documentation
  git-show-ref.txt: clarify the pattern matching
  documentation: git-config minor cleanups
  Update test script annotate-tests.sh to handle missing/extra authors
  Better advice on using topic branches for kernel development
  Documentation: update implicit "--no-index" behavior in "git diff"
  Documentation: expand 'git diff' SEE ALSO section
  Documentation: diff can compare blobs
  Documentation: gitrevisions is in section 7
  fast-import: Allow filemodify to set the root
  shell portability: no "export VAR=VAL"
  CodingGuidelines: reword parameter expansion section
  Documentation: update-index: -z applies also to --index-info
  gitweb: Improve behavior for actionless path_info gitweb URLs
  gitweb: Fix bug in evaluate_path_info
  ...

Conflicts:
	GIT-VERSION-GEN
	RelNotes
	contrib/completion/git-completion.bash

.gitignore

@@ -166,12 +166,17 @@
 /test-dump-cache-tree
 /test-genrandom
 /test-index-version
+/test-line-buffer
 /test-match-trees
+/test-obj-pool
 /test-parse-options
 /test-path-utils
 /test-run-command
 /test-sha1
 /test-sigchain
+/test-string-pool
+/test-svn-fe
+/test-treap
 /common-cmds.h
 *.tar.gz
 *.dsc
@@ -181,6 +186,12 @@
 *.[aos]
 *.py[co]
 .depend/
+*.gcda
+*.gcno
+*.gcov
+/coverage-untested-functions
+/cover_db/
+/cover_db_html/
 *+
 /config.mak
 /autom4te.cache

.mailmap

@@ -36,7 +36,7 @@ Lars Doelle <lars.doelle@on-line ! de>
 Lars Doelle <lars.doelle@on-line.de>
 Li Hong <leehong@pku.edu.cn>
 Lukas Sandström <lukass@etek.chalmers.se>
-Martin Langhoff <martin@catalyst.net.nz>
+Martin Langhoff <martin@laptop.org>
 Michael Coleman <tutufan@gmail.com>
 Michael J Gruber <git@drmicha.warpmail.net> <michaeljgruber+gmane@fastmail.fm>
 Michael W. Olson <mwolson@gnu.org>

Documentation/CodingGuidelines

@@ -35,21 +35,28 @@ For shell scripts specifically (not exhaustive):
    properly nests.  It should have been the way Bourne spelled
    it from day one, but unfortunately isn't.
 
+ - We use POSIX compliant parameter substitutions and avoid bashisms;
+   namely:
+
    - We use ${parameter-word} and its [-=?+] siblings, and their
      colon'ed "unset or null" form.
 
    - We use ${parameter#word} and its [#%] siblings, and their
      doubled "longest matching" form.
 
- - We use Arithmetic Expansion $(( ... )).
-
    - No "Substring Expansion" ${parameter:offset:length}.
 
    - No shell arrays.
 
    - No strlen ${#parameter}.
 
- - No regexp ${parameter/pattern/string}.
+   - No pattern replacement ${parameter/pattern/string}.
+
+ - We use Arithmetic Expansion $(( ... )).
+
+ - Inside Arithmetic Expansion, spell shell variables with $ in front
+   of them, as some shells do not grok $((x)) while accepting $(($x))
+   just fine (e.g. dash older than 0.5.4).
 
  - We do not use Process Substitution <(list) or >(list).
 

Documentation/Makefile

@@ -279,7 +279,7 @@ $(patsubst %,%.html,$(API_DOCS) technical/api-index): %.html : %.txt
 XSLT = docbook.xsl
 XSLTOPTS = --xinclude --stringparam html.stylesheet docbook-xsl.css
 
-user-manual.html: user-manual.xml
+user-manual.html: user-manual.xml $(XSLT)
 	$(QUIET_XSLTPROC)$(RM) $@+ $@ && \
 	xsltproc $(XSLTOPTS) -o $@+ $(XSLT) $< && \
 	mv $@+ $@