Osmorc Code

Added autodetection of Osmorc facets
OSMORC-3:
* exported required bundles of framework instance bundles are now added as dependencies to the module depending on the exporting bundle since IDEA libraries cannot have dependencies themselves.
* Libraries of a framework instance are removed when the framework instance itself is removed.
* Framework instance creation dialog is now centered on the settings dialog.
* Package references in a library manifest file are now searched in the project all scope since there is no module scope in this case.
* When a project uses a framework instance that is not yet available on the used IDEA installation, an undefined framework instance is created temporarily and for the next framework instance creation the name is preset to the name of this missing framework instance.

OSMORC-3:
* Framework instance libraries are now added as module dependencies when resolving bundle dependencies.

OSMORC-3:
* Implemented loading of manifest from framework instance libraries.
* Reworked framework instance libary handling.

OSMORC-3: Libraries are now created for Equinox framework instances.

Still working on OSMORC-3

Working on OSMORC-3.
* Introduced an interface and a registry for framework integrators (First implementation will be an integrator for Equinox)
* Started working on a tool used to define different framework instances and to choose a specific framework instance for a project (aka. define a target platform)

Fixed OSMORC-7: Now a manifest file is automatically created when an Osmorc facet is added to a module. There is still a situation where the manifest files exists for IDEA but is never written to disc. Need to fix that before closing the issue.

* Now excluding any Osmorc zip from the source zip - not only the source zip itself.

* Switched on development mode in Equinox. It doesn't stop resolving bundles when a required bundle does not exist or some other constraints are not met.
* Added a simple ant build script for the generation of a source zip.