Overhaul Spack's URL parsing (#2972)

* Remove fake URLs from Spack

* Ignore long lines for URLs that start with ftp:

* Preliminary changes to version regexes

* New redesign of version regexes

* Allow letters in version-only

* Fix detection of versions that end in Final

* Rearrange a few regexes and add examples

* Add tests for common download repositories

* Add test cases for common tarball naming schemes

* Finalize version regexes

* spack url test -> spack url summary

* Clean up comments

* Rearrange suffix checks

* Use query strings for name detection

* Remove no longer necessary url_for_version functions

* Strip off extraneous information after package name

* Add one more test

* Dot in square brackets does not need to be escaped

* Move renaming outside of parse_name_offset

* Fix versions for a couple more packages

* Fix flake8 and doc tests

* Correctly parse Python, Lua, and Bio++ package names

* Use effective URLs for mfem

* Add checksummed version to mitos

* Remove url_for_version from STAR-CCM+ package

* Revert changes to version numbers with underscores and dashes

* Fix name detection for tbb

* Correctly parse Ruby gems

* Reverted mfem back to shortened URLs.

* Updated instructions for better security

* Remove preferred=True from newest version

* Add tests for new `spack url list` flags

* Add tests for strip_name_suffixes

* Add unit tests for version separators

* Fix bugs related to parseable name but in parseable version

* Remove dead code, update docstring

* Ignore 'binary' at end of version string

* Remove platform from version

* Flip libedit version numbers

* Re-support weird NCO alpha/beta versions

* Rebase and remove one new fake URL

* Add / to beginning of regex to avoid picking up similarly named packages

* Ignore weird tar versions

* Fix bug in url parse --spider when no versions found

* Less strict version matching for spack versions

* Don't rename Python packages

* Be a little more selective, version must begin with a digit

* Re-add fake URLs

* Fix up several other packages

* Ignore more file endings

* Add parsing support for Miniconda

* Update tab completion

* XFAILS are now PASSES for 2 web tests

var/spack/repos/builtin/packages/sublime-text/package.py

@@ -33,8 +33,8 @@ class SublimeText(Package):
     homepage = "http://www.sublimetext.com/"
     url      = "https://download.sublimetext.com/sublime_text_3_build_3126_x64.tar.bz2"
 
-    version('3126',  'acc34252b0ea7dff1f581c5db1564dcb')
-    version('2.0.2', '699cd26d7fe0bada29eb1b2cd7b50e4b')
+    version('3_build_3126', 'acc34252b0ea7dff1f581c5db1564dcb')
+    version('2.0.2',        '699cd26d7fe0bada29eb1b2cd7b50e4b')
 
     # Sublime text comes as a pre-compiled binary.
     # Since we can't link to Spack packages, we'll just have to