META - parameter renaming effort

[jfgrimm]

Meta issue to track progress on the renaming, since #4464 already has a lot of text in it.

• documentation

  • naming style guide
  • list of changes

• add framework support for renamed:

  • [#4511, #4555] easyconfig parameters, templates & constants
  • [#4556] easybuild configuration options
  • [#4587] toolchain options

• add parameters to be renamed to the corresponding ALTERNATIVE_* dicts:

  • [#4514] easyconfig parameters, templates & constants
  • easybuild configuration options
  • toolchain options

• enhance --fix-deprecated-easyconfigs to update easyconfigs to use new parameters

• switch to new parameters in existing easyblocks/easyconfigs:

  • easyconfigs
  • easyblocks

• rename easyblock-specific custom parameters:

  • generic
  • other