Resolve build errors caused by invalid dependencies

This commit corrects problems with dependencies in plugins and features,
which have been preventing successful build of plugin from CLI.

I don't understand how Eclipse build system works, however it manages to
build project from GUI, but then fails to do the same from CLI, even more it
doesn't bother with printing any error message, it just doesn't produce
output.

It also sets minimum required Java runtime to 1.6. It looks like our code
uses features that are >= Java 1.6, but in our manifest minimum required
version was 1.5.

Signed-off-by: Anton Kolesov <anton.kolesov@synopsys.com>
Rename debugger feature, add Elf32 plugin to it

Signed-off-by: Anton Kolesov <anton.kolesov@synopsys.com>
Remove obsolete feature for Elf32 plugin

Signed-off-by: Anton Kolesov <anton.kolesov@synopsys.com>
Add new update site project

Signed-off-by: Anton Kolesov <anton.kolesov@synopsys.com>
Remove old update site projects

Signed-off-by: Anton Kolesov <anton.kolesov@synopsys.com>
Add build files to generate zip from CLI

Use ECLIPSE_WORKSPACE environment bar in Makefile, because WORKSPACE might
conflict with Jenkins variable.

Signed-off-by: Anton Kolesov <anton.kolesov@synopsys.com>
Rename Debugger and Elf32 plugins

Signed-off-by: Anton Kolesov <anton.kolesov@synopsys.com>
Copy site.xml when creating plugins zip

Signed-off-by: Anton Kolesov <anton.kolesov@synopsys.com>