Accessing 'repo' is bad practice and disabled in newer artifactory
versions (like the one we just deployed). Rely on releases instead.

Also, the identd plugin was depending on the wrong parser, and
was presumably pulling in criminally old versions from artifactory.

Allow anything in a sub-directory, such as services. This greatly
simplifies embedding complex software such as Jetty.

This prevents DMDirc's transitive dependencies from being bundled
in plugins. e.g. DMDirc includes SLF4J, so any plugin that depends
on it (or depends on another project that depends on SLF4J) should
not include it in the plugin jar to avoid having duplicate classes
from different class loaders.

Stop swimming against the tide and accept what most of the rest of
the world does.

While it adds an annoying depth to the actual source code, it makes
the root directory nicer (no more 'test-res' dirs), means we don't
have to override the gradle config, and makes it nicer to work in
IDEA 2016.1.

Update DMDirc repo to HTTPS.

Because plugins depends on client, they need to be able to
find the client's transitive dependencies as well.

This replaces the default source directories (src/main/java, etc)
with our own, instead of just appending ours to the list.

This makes the plugins include their version in the output file
name, and when used as a dependency.

Also create a dist-versioned directory which accumulates versioned
plugins.

Add fake jar/test tasks with dependencies on the subprojects.
Make dependencies depend on subprojects.

Helps if we don't run a load of parallel job which each have to
hit maven to make sure the 3 second old build is still current.

This saves us using --refresh-dependencies willy-nilly, which
wastes loads of time on the non-dynamic dependencies.

Whenever we build a new jar -- or if the jar in dist is changed --
copy it into the dist directory with a proper name.

Change-Id: If05133cf38f1dbe2ce9ba6ace94bf8cf2b466bc1
Reviewed-on: http://gerrit.dmdirc.com/4060
Automatic-Compile: DMDirc Build Manager
Reviewed-by: Greg Holmes <greg@dmdirc.com>

Also make some things more groovy-y.

Change-Id: Iced4396b6a43f2548f0633f982edc63e7b978770
Reviewed-on: http://gerrit.dmdirc.com/4029
Reviewed-by: Greg Holmes <greg@dmdirc.com>
Automatic-Compile: DMDirc Build Manager

Define a 'plugin' function to use in place of 'project' that
will figure out where the plugin is living in the root gradle
project.

This allows the plugins to be included and built properly
when they are in a submodule of either the client or the meta
project.

Change-Id: Iacc3551ac9c0bf2343151eb9cf85296c85c5a28b
Reviewed-on: http://gerrit.dmdirc.com/4028
Automatic-Compile: DMDirc Build Manager
Reviewed-by: Greg Holmes <greg@dmdirc.com>

This copies licenses, identities, preferences, and anything else we add.

Change-Id: I7d78bfdce2ad2adf9c42db564366a30f55981c62
Reviewed-on: http://gerrit.dmdirc.com/4024
Reviewed-by: Chris Smith <chris@dmdirc.com>
Automatic-Compile: DMDirc Build Manager

Change-Id: I26ca7f22361593650793e9db64d9a1d54ced234b
Reviewed-on: http://gerrit.dmdirc.com/4022
Automatic-Compile: DMDirc Build Manager
Reviewed-by: Chris Smith <chris@dmdirc.com>

Write the build environment to a list section of the plugin
meta-data. This should make it easier to figure out what
on earth is going on when everything breaks.

Change-Id: I317cd6795e81d56930b21b8d9beeabc28a0b775e
Reviewed-on: http://gerrit.dmdirc.com/4010
Reviewed-by: Greg Holmes <greg@dmdirc.com>
Automatic-Compile: DMDirc Build Manager

Feel like we've got a few too many moving parts at the moment,
so explicitly set versions of our dependencies.

Also took the opportunity to upgrade a couple of things.

Change-Id: I1af4dbfbbd149e5a4c64e83f66de015affcf4032
Reviewed-on: http://gerrit.dmdirc.com/4001
Automatic-Compile: DMDirc Build Manager
Reviewed-by: Greg Holmes <greg@dmdirc.com>

Change-Id: If96ce40a9e3afaf07858eec6ee17fc384715d240
Reviewed-on: http://gerrit.dmdirc.com/3947
Reviewed-by: Greg Holmes <greg@dmdirc.com>
Automatic-Compile: DMDirc Build Manager

Fix assorted PMD errors.

Change-Id: I9af7e36f2aeb10bd658c5825ad2f94161e0bb243
Reviewed-on: http://gerrit.dmdirc.com/3940
Reviewed-by: Greg Holmes <greg@dmdirc.com>
Automatic-Compile: DMDirc Build Manager

Change-Id: Ia9bb44a6ac02aec3d5991a1d3a9a003a344b6947
Reviewed-on: http://gerrit.dmdirc.com/3919
Reviewed-by: Greg Holmes <greg@dmdirc.com>
Automatic-Compile: DMDirc Build Manager

Change-Id: I19e0e2da3fe8d22b633c3f8363516d2bd77bf0a8
Reviewed-on: http://gerrit.dmdirc.com/3902
Automatic-Compile: DMDirc Build Manager
Reviewed-by: Greg Holmes <greg@dmdirc.com>

Change-Id: I927fe011c2e3675fc1e93624f8fc679a03d19077
Reviewed-on: http://gerrit.dmdirc.com/3901
Automatic-Compile: DMDirc Build Manager
Reviewed-by: Greg Holmes <greg@dmdirc.com>

Change-Id: If2da48b3dbfeabb1f7df9b07201251fc1e1ac417
Reviewed-on: http://gerrit.dmdirc.com/3897
Reviewed-by: Greg Holmes <greg@dmdirc.com>
Automatic-Compile: DMDirc Build Manager

Change-Id: I74c0aa82d9a3651a88f216ea029c4ba8a7a71481
Reviewed-on: http://gerrit.dmdirc.com/3895
Reviewed-by: Greg Holmes <greg@dmdirc.com>
Automatic-Compile: DMDirc Build Manager

Change-Id: Ie5281df14a0f27067e62a7b9578c1b3c1271c46c
Reviewed-on: http://gerrit.dmdirc.com/3890
Automatic-Compile: DMDirc Build Manager
Reviewed-by: Greg Holmes <greg@dmdirc.com>

* Move all plugins to their own top-level directories.
* Move resources out of source trees
* Add Gradle build scripts.
* Remove ivy and ant build scripts.

Change-Id: Ib69a48ef26800c174ccf51c84ff9d1f73529460f
Depends-On: I303b6b69518468f98d48d835b8f40135d9e4bcbf
Reviewed-on: http://gerrit.dmdirc.com/3850
Automatic-Compile: DMDirc Build Manager
Reviewed-by: Greg Holmes <greg@dmdirc.com>