Fix blosc version specification
Now blosc_shared is the default version

The shared version of the library is considered the default one.
The static version is only built if the BUILD_STATIC option is enabled
(by befault is is).

The static vesion of the libraries and header files now belong to the
DEV component.
Actually fix blosc version specification for CPsck
Fix CPACK_SOURCE_IGNORE_FILES
Set the build flags