René Widera
caa0c5c687
environment shell: fix spack load (#7747)
Fix `spack load` with extended packe specifications those includes spaces.
Solved by using perfectly parameter forwarding via temporary array.
example:
```
$ spack install zlib
$ spack install zlib cppflags='-O3 -march=native'
$ spack install zlib cppflags='-O2 -march=native'
$ spack find -d -L -f zlib
==> 3 installed packages.
-- linux-linuxmint18-x86_64 / gcc@5.4.0 -------------------------
k5hg4kkxiutkfl6n53ogz5wnlbdrsdtf zlib@1.2.11%gcc
mse2fyzdxciszdhiqi4b5kl6fxkps3fh zlib@1.2.11%gcc cppflags="-O2 -march=native"
vrnvj2fikcbxqxrymctnlpmud7wbuahk zlib@1.2.11%gcc cppflags="-O3 -march=native"
$ spack load zlib cppflags='-O3 -march=native'
==> Error: Unexpected token
['zlib', 'cppflags=-O3', '-march=native']
```