Prevent this error:

metis_graph_part.c:301:7: error: non-void function 'METIS_PartGraphVKway' should return a value
      [-Wreturn-type]

* 	modified:   package.py

* 	deleted:    var/spack/repos/builtin/packages/py-numexpr/numexpr-2.6.5.tar.gz

* 	new file:   var/spack/repos/builtin/packages/py-backcall/package.py

* Update package.py

* Update package.py

* Update package.py

* Update package.py

* flang: add support for llvm-6

* flang: review changes

* pgmath: make flake8 happy

- Clean up error messages for when a lock can't be created, or when an
  exclusive (write) lock can't be taken on a file.

- Add a number of subclasses of LockError to distinguish timeouts from
  permission issues.

- Add an explicit check to prevent the user from taking a write lock on a
  read-only file.
  - We had a check for this for when we try to *upgrade* a lock on an RO
    file, but not for an initial write lock attempt.

- Add more tests for different lock permission scenarios.

- write locks previously wrote information about the lock holder (host
  and pid), and read locks woudl read this in.

- This is really only for debugging, so only enable it then

- add some tests that target debug info, and improve multiproc lock test
  output

- llnl.util.lock tests are now independent of Spack

- multiproc doesn't depend on Spack
- llnl.util.lock test uses it, but shouldn't use parts of Spack.

- this shoudl have been moved when we moved pytest.ini to lib/spack/spack/test

* initial version of the package pyTorch (#171)

* adding version 0.4

* flake8 correction

* reordering version, removing run dependecies

* Changing depends_on type to default

* mitofates: more deps and a patch to make it functional

When a user specifies a URL for a specific version of a package, Spack originally
would use that URL for all newer versions of the package. This behavior has
proven to be generally more harmful than useful, so this PR removes the feature
such that a version-specific URL override affects only that version.

Signed-off-by: Howard Pritchard <howardp@lanl.gov>

* Update kaldi

always use the --fst-version otherwise it does the wrong thing with
selecting the fst version.

also enable speex by default

* Give version a more meaningful name

* Update older version with a date string instead

* gtkorvo-atl: Updated to version 2.2

* gtkorvo-dill: Updated to version 2.4

* gtkorvo-enet: Updated to version 1.3.14

* libevpath: Updated to version 4.4.0

* libffs: Updated to version 1.5

* gtkorvo-atl: Bugfix: Fixed cmake args

* gtkorvo-enet: Switched order of versions to have the latest version on the top

* gtkorvo-atl: Cleaned up cmake_args. Added conditional self.run_tests

* gtkorvo-dill: Cleaned up cmake_args. Added conditional self.run_tests

* libffs: Correction in dependency versions. Cleaned up cmake_args. Added conditional self.run_tests

* libevpath: Correction in dependency versions. Cleaned up cmake_args. Added conditional self.run_tests

* gtkorvo-atl: Removed unused option from cmake args

* fetch: remove 'trying' when cloning repos

This makes it similar to what the URL strategy prints.

* change svn/hg names

libxshmfence@1.2 does not compile with recent versions of glibc.

* libnova: new package

* libnova: flake8

If the user sets "ccache: true" in spack's config.yaml, Spack will use an available
ccache executable when compiling c/c++ code. This feature is disabled by default
(i.e. "ccache: false") and the documentation is updated with how to enable
ccache support

* Make 'netlib-lapack' a CMakePackage.

* Add a comment.

* Some refactoring.

* express: bamtools lib handling

* express: use libs property

* express: remove old comment

Change-Id: I3bfe5b4ba497fae57d5382502ea9a1b054688fdb

* blasr: new package

* blasr: changed version release, created list with 9 things, seperated make into build phase.

* blasr: fixed build phase by adding :

* blasr: fixed syntax for configure_args

* blasr: flake8 edits

* blasr-libcpp: fixed configure_args syntax

* blasr: fixed install issues resulting from PacBio changes

* blasr: removed accidental blasr-libcpp upload

* blasr: removed accidental blasr-libcpp upload

* blasr: removed blasr-libcpp

* blasr: edited out comment

* kvtree package file

* MPI is default on

* proper mpi compiler

* rankstr package

* better rankstr description

* typo

* redset package

* shuffile package

* er package

* axl package

* proper pythor

* mpi is default on

* alpha releases and master versions

* veloc package with boost headers dep

* cmake version

* added C++11 requirement

* flake8

* flake8

* ecp tag

* axl: better async api option handling

* veloc package description

* prettier args list

* C++11 flag handler

* v1.0 of veloc