spack config add <value>: add nested value value to the configuration scope specified
spack config remove/rm: remove specified configuration from the relevant scope

The rose library uses the `strtoflt128` and `quadmath_snprintf`
functions. In order to successfully link the rose library, chill must
also link the GCC libquadmath library to resolve the two functions. This
patch changes the chill build to include this library.

Chill will also not compile unless headers from the gmp and isl
libraries are found in the includes path. Two patches - one each for gmp
and isl - modify the chill build process to add options to specify those
paths. These options follow the similar pattern as seen with BOOSTHOME
and ROSEHOME options which already exist in the chill build process.

Because of the addition of GMPHOME and ISLHOME options, build
requirements for gmp and isl are also added.

* mdanalysis

* [py-mmtf-python] fixed copyright

Co-authored-by: Andrew Elble <aweits@rit.edu>

* Update package.py

* edit confliction when add package 'meam' 

 The USER-MEAMC fully replaces the MEAM package, which has been removed from LAMMPS after the 12 December 2018 version.

* Add missing dependency on Python for Mono.

At build time

* Adding version 6.8.0.123 for mono

The lapack-0.3.9-xerbl patch is not needed for versions 0.3.10 and
above.

* Updated nearly all options to default to OFF

* Fixed imported but unused module flake error

* Updated MUMPS-5.3.3

* fixed E741 error(l -> ltr)

Signed-off-by: Adam Moody <moody20@llnl.gov>

* Add ability to force removal of install failure tracking data through spack clean

* Add clean failures option to packaging guide

* gromacs: fix fftw dependency

Only depend on fftw+mpi when gromacs is built with mpi,
and depend on fftw~mpi otherwise.

* gromacs: fix cmake dependency

master branch depends on cmake 3.11 (as specified in CMakeLists.txt
cmake dependency is also bumped to 3.11 when fj compilers are used
in order to fix OpenMP detection.

perl.org still recommends 5.30.3, so keep it as the preferred version.

* Some minor fixes to set_permissions() in file_permissions.py

The set_permissions() routine claims to prevent users from creating
world writable suid binaries.  However, it seems to only be checking
for/preventing group writable suid binaries.

This patch modifies the routine to check for both world and group
writable suid binaries, and complain appropriately.

* permissions.py: Add test to check blocks world writable SUID files

The original test_chmod_rejects_group_writable_suid tested
that the set_permissions() function in
lib/spack/spack/util/file_permissions.py
would raise an exception if changed permission on a file with
both SUID and SGID plus sticky bits is chmod-ed to g+rwx and o+rwx.

I have modified so that more narrowly tests a file with SUID
(and no SGID or sticky bit) set is chmod-ed to g+w.

I have added a second test test_chmod_rejects_world_writable_suid
that checks that exception is raised if an SUID file is chmod-ed
to o+w

* file_permissions.py: Raise exception when try to make sgid file world writable

Updated set_permissions() in file_permissions.py to also raise
an exception if try to make an SGID file world writable.  And
added corresponding unit test as well.

* Remove debugging prints from permissions.py

* Module index should not be unconditionally overwritten

Uncovered after we switched our CI to generate modules for packages
one-by-one rather than in bulk. This overwrote a complete module index
with an index with a single entry, and broke our downstream Spack
instances that needed the upstream module index.

I get the following error message, if I do not use editline from the system.

```
>> 3090    Undefined symbols for architecture x86_64:
     3091      "_tgetent", referenced from:
     3092          _terminal_set in libedit.a(terminal.c.o)
     3093      "_tgetflag", referenced from:
     3094          _terminal_set in libedit.a(terminal.c.o)
     3095      "_tgetnum", referenced from:
     3096          _terminal_set in libedit.a(terminal.c.o)

     ...

     3110          _terminal_insertwrite in libedit.a(terminal.c.o)
     3111          _terminal_clear_EOL in libedit.a(terminal.c.o)
     3112          _terminal_clear_screen in libedit.a(terminal.c.o)
     3113          _terminal_beep in libedit.a(terminal.c.o)
     3114          ...
     3115    ld: symbol(s) not found for architecture x86_64
```

bugfix: fix compiler environment handling to reset environment after

* Added unit tests to Github Actions

* Set user e-mail and name for git tests to succeed

* Simplify setup.sh logic

* Replicate Travis script on Github Actions

* Update flags since '.' is not allowed

* Added badge, simplified workflow

* Remove pinning of coverage

* Remove unit tests run on Github Actions from Travis

parallel-netcdf's buildiface script needs perl during build.