- in many files, regular strings were used in places where raw strings
should've been used.
- convert these to raw strings and get rid of new flake8 errors
- remove the old LGPL license headers from all files in Spack
- add SPDX headers to all files
- core and most packages are (Apache-2.0 OR MIT)
- a very small number of remaining packages are LGPL-2.1-only
* adding H5Z-ZFP; updating zfp to use choice variant for bit stream word size
* fixing homepage url
* removed fortran error message...just build fortran if can, otherwise ignore
* adding 0.5.1 and variant for uint8 bit stream word type
* Revisions as per davydden
* fixing style (flake8) issues
* - switched to derive from MakefilePackage
- fixed typo in variant check
- Confirmed installs correctly with bswtuint8 variant
* added build method; changed zfp_incdir to incdir
