Only include gems in bundled or default

[headius]

Fixes #6618

[headius]

I tested this by diffing the contents of the build jruby-stdlib jar as follows:

[] ~/projects/jruby-9.2/jrubyfixed $ cd ../jrubybroke

[] ~/projects/jruby-9.2/jrubybroke $ !jar
jar tf lib/target/jruby-stdlib-9.2.17.0-SNAPSHOT.jar | sort > stdlibjar.txt

[] ~/projects/jruby-9.2/jrubybroke $ cd ../jrubyfixed

[] ~/projects/jruby-9.2/jrubyfixed $ jar tf lib/target/jruby-stdlib-9.2.17.0-SNAPSHOT.jar | sort > stdlibjar.txt

[] ~/projects/jruby-9.2/jrubyfixed $ diff -u stdlibjar.txt ../jrubybroke/stdlibjar.txt 

[] ~/projects/jruby-9.2/jrubyfixed $

As unbelievable as it seems, apparently my change introduced no diffs into this jar.

Testing against a local dev build will include other bits like bin/* that are not from the bundled or default gems, but the gem dir contents should be the same.

[headius]

Verification locally seems to indicate that this is working properly.

I changed the **/* gem home glob to instead be more specific about the gem names and versions to include:

• specifications/default/* to include specifications for all default gems
• all_gems.map {|name,version| "specifications/#{name}-#{version}*"} to include specifications for bundled gems
• all_gems.map {|name,version| "gems/#{name}-#{version}*/**/*"} to include gem dirs for bundled and default gems
• all_gems.map {|name,version| "cache/#{name}-#{version}*"} to include cached gem files for bundled and default gems

Diff of a deployed 9.2.17.0 tarball vs a 9.2.16.0 shows the same diffs as in #6609:

$ diff -qr jruby-9.2.16.0/ jruby-9.2.17.0/
Only in jruby-9.2.17.0/bin: install_doc
Only in jruby-9.2.17.0/bin: install_doc.bat
Files jruby-9.2.16.0/bin/jruby and jruby-9.2.17.0/bin/jruby differ
Files jruby-9.2.16.0/bin/jruby.bash and jruby-9.2.17.0/bin/jruby.bash differ
Only in jruby-9.2.17.0/bin: lock_jars
Only in jruby-9.2.17.0/bin: lock_jars.bat
Only in jruby-9.2.17.0/bin: racc
Only in jruby-9.2.17.0/bin: racc.bat
Files jruby-9.2.16.0/lib/jruby.jar and jruby-9.2.17.0/lib/jruby.jar differ
Only in jruby-9.2.16.0/lib/ruby/gems/shared/gems: fileutils-1.1.0
Only in jruby-9.2.17.0/lib/ruby/gems/shared/gems: racc-1.5.2-java
Only in jruby-9.2.16.0/lib/ruby/gems/shared/gems: webrick-1.6.1
Files jruby-9.2.16.0/lib/ruby/stdlib/org/yaml/snakeyaml/1.26/snakeyaml-1.26.jar and jruby-9.2.17.0/lib/ruby/stdlib/org/yaml/snakeyaml/1.26/snakeyaml-1.26.jar differ
Files jruby-9.2.16.0/lib/ruby/stdlib/org/yaml/snakeyaml/maven-metadata-local.xml and jruby-9.2.17.0/lib/ruby/stdlib/org/yaml/snakeyaml/maven-metadata-local.xml differ

Note that the bin/jruby and bin/jruby.bash scripts differ due to #6615.