devtool / recipetool fixes

Fix some issues I found when trying to use devtool upgrade on a git recipe; improve extraction of patch header from original commit in devtool; recipetool setvar; and other fixes and cleanups I have been working on for a while.

All devtool/recipetool tests pass with these patches (plus the two bitbake bb.utils patches I sent the other day, though this patchset should not depend on those.)

The following changes since commit 6f98c39418c60b7c0b25b30983d2e5257158a6a4:

gcc: Drop 4.8 (2015-11-16 14:59:07 +0000)

are available in the git repository at:

git://git.openembedded.org/openembedded-core-contrib paule/devtool10
http://cgit.openembedded.org/cgit.cgi/openembedded-core-contrib/log/?h=paule/devtool10

Paul Eggleton (18):
devtool: upgrade: fix removing other recipes from workspace on reset
devtool: upgrade: fix updating PV and SRCREV
devtool: upgrade: remove erroneous error when not renaming recipe
devtool: upgrade: fetch remote repository before checking out new revision
devtool: upgrade: provide a means to update the source branch lib/oe/patch: improve extraction of patch header
devtool: disable creating workspace for extract and search subcommands
devtool: package: use DEPLOY_DIR_<pkgtype> to get deploy directory
devtool: drop unused plugin_init() functions
devtool: search: print SUMMARY value
devtool: ensure we change back to the original dir on error lib/oe/recipeutils: check in validate_pn() for names instead of filenames
devtool: build: use bbappend to set PARALLEL_MAKE
devtool: build: enable showing default task in help
devtool: clarify help text
lib/oe/recipeutils: refactor patch_recipe_file() to use edit_metadata()
recipetool: add setvar subcommand
recipetool: make plugin registration function name consistent with devtool

 meta/lib/oe/patch.py                |  58 +++++++++----
 meta/lib/oe/recipeutils.py          | 162 +++++++++++++++++++++---------------
 meta/lib/oeqa/selftest/devtool.py   |   8 +-
 scripts/devtool                     |   7 +-
 scripts/lib/devtool/__init__.py     |  26 +++---
 scripts/lib/devtool/build.py        |  54 ++++++------
 scripts/lib/devtool/package.py      |  24 +++---
 scripts/lib/devtool/sdk.py          |   4 -
 scripts/lib/devtool/search.py       |  79 ++++++++++--------
 scripts/lib/devtool/standard.py     |  32 ++++---
 scripts/lib/devtool/upgrade.py      |  98 ++++++++++++----------
 scripts/lib/recipetool/append.py    |   2 +-
 scripts/lib/recipetool/create.py    |   2 +-
 scripts/lib/recipetool/newappend.py |   7 +-
 scripts/lib/recipetool/setvar.py    |  75 +++++++++++++++++
 scripts/recipetool                  |  10 ++-
 16 files changed, 397 insertions(+), 251 deletions(-)
 create mode 100644 scripts/lib/recipetool/setvar.py

2.1.0