Streamline Package model fields #1226 and #1324

 * Move size right after download_url
 * Rename download_sha1 to sha1 #1324
 * Rename download_md5 to md5 #1324
 * Rename download_sha256 to sha256 #1324
 * Rename download_sha512 to sha512 #1324
 * Replace vcs_tool, vcs_respository and vcs_revision by vcs_url #1226
 * Cleanup packagedcode usage of basetrsings and other minor refactoring
 * Update .ABOUT files accordingly

Signed-off-by: Philippe Ombredanne <pombredanne@nexb.com>

Author: pombredanne

src/typecode/prog_lexers.ABOUT

@@ -14,8 +14,7 @@ notice_url: https://bitbucket.org/birkenfeld/pygments-main/src/7941677dc77d4f2bf
 owner: Pocoo Team
 owner_url: http://www.pocoo.org/
 track_changes: true
-vcs_repository: http://bitbucket.org/birkenfeld/pygments-main
+vcs_url: hg+http://bitbucket.org/birkenfeld/pygments-main
 version: 2.2.0
 
-vcs_tool: hg
 notes: this is a tiny subset of Pygments to focus on programming languages detection only.

src/typecode/pygments_lexers.ABOUT

@@ -14,8 +14,7 @@ notice_url: https://bitbucket.org/birkenfeld/pygments-main/src/7941677dc77d4f2bf
 owner: Pocoo Team
 owner_url: http://www.pocoo.org/
 track_changes: true
-vcs_repository: http://bitbucket.org/birkenfeld/pygments-main
+vcs_url: hg+http://bitbucket.org/birkenfeld/pygments-main
 version: 2.2.0
 
-vcs_tool: hg
 notes: this is a tiny subset of Pygments to focus on programming languages detection only.