Bugfix release

- spack inadvertently required git, hg, svn, and svnadmin.
- this version doens't require them unless they're used.

v0.8.10: Fancy fetching

=======================
v0.8.10 Release Notes
=======================

For users
-----------------------
  - Packages can now fetch source from git, svn, and hg repositories.
  - Environment module support, docs.
  - Extensive additions to online documentation.
  - 18 new packages

For packagers
-----------------------
  - Versions in ranges are now more permissive, fixing some long-standing
    bugs.  pkg@:1 will now match [email protected], [email protected], [email protected], etc.
    Previously "@:1" would not match any minor or patch versions above 1.
  - Github-aware list urls (spack will find releases tab on github)

Commands
-----------------------
  - spack list can now do globs (e.g., spack list mpi*)
  - spack md5 command does single-file checksums
  - spack info -r autogenerates package list for documentation.
  - spack edit -c can edit Spack commands by name.

Robustness
-----------------------
  - Extensive new unit tests (for fetching and mirroring)
  - MPI installs can work without fortran compilers
  - Version updates fix long-standing test failure. Tests all pass now.
  - Many bugfixes

18 new packages
-----------------------
  ImageMagick  automake   fontconfig  libNBC   libtool  netgauge
  autoconf     bib2xhtml  freetype    libpng   lwm2     sundials
  automaded    coreutils  jpeg        libtiff  mpe2     swig

Spack version 0.8.5

New features for users:
- Integration with TCL modules and dotkit
  - spack use/unuse, spcak load/unload
- Works with Python 2.6 (as well as 2.7 like before)
- 24 new packages:
  adept-utils  extrae      libmonitor  ompss    papi        scorep
  clang        hwloc       llvm        opari2   paraver     sqlite
  cube         libarchive  llvm-lld    openssl  postgresql  wx
  dtcmp        libcircle   lwgrp       otf2     scalasca    wxpropgrid

New features for packagers and developers:
- Per-version URLs
- Compiler-dependent C++11 flag
- CMAKE_PREFIX_PATH and PKG_CONFIG_PATH now set before install()
- Improved spec design, more stability
- New commands:
  - spack pkg
  - spack cd
  - spack location

Fix Jeff Keasler's issues and add parmetis package.