Merge branch '415-modulecmd-reverse-sort-output-of-avail-and-search-only-if-pattern-is-the-empty-string' into 'master'

Resolve "modulecmd: reverse sort output of avail and search only if pattern is the empty string"

Closes #415

See merge request !447

Resolve "modulecmd: loading Lmod modules failed"

Closes #414

See merge request !446

Resolve "modulecmd: print a more verbose deprecated message"

Closes #413

See merge request !445

Resolve "build-system: fix check whether the main package has to be rebuilt"

Closes #412

See merge request !444

Resolve "build-system: review code to set RPATH"

Closes #411

See merge request !443

Resolve "modulecmd: sub-cmds 'avail' and 'search' are case insensitive"

Closes #410

See merge request !442

Resolve "modulecmd: fixes/review sub-cmd 'purge'"

Closes #409

See merge request !441

Merge branch '408-modulecmd-module-avail-reveals-modules-which-are-actually-shadowed-by-an-overlay' into 'master'

Resolve "modulecmd: module avail reveals modules which are actually shadowed by an overlay"

Closes #408

See merge request !440

Resolve "moduelcmd: argument not used in use_group() and unuse_group()"

Closes #407

See merge request !439

Resolve "modulecmd: re-initialize Pmodules env with "module purge""

Closes #406

See merge request !438

modulecmd: don't export SystemCPU and OSrelease in PMODULES_ENV

Closes #405

See merge request !437

Resolve "modulecmd: error in doc-string of function pmodules_setup"

Closes #404

See merge request !436

Resolve "modulecmd: use/unuse groups in overlay"

Closes #403

See merge request !435

Resolve "update changelog for 1.1.23"

Closes #402

See merge request !434

Resolve "modulecmd: review main and other minor changes"

Closes #401

See merge request !433

Resolve "modulecmd: print correct release stage for Spack modules"

Closes #400

See merge request !432

Resolve "modulecmd: review loading of modules with extended name/syntax"

Closes #399

See merge request !431