package: Explicitly use B_HPKG_COMPRESSION_NONE

Allow specifying the compression level for package creation

* Introduce BPackageWriterParameters which comprises all parameters
for package creation, currently flags and compression level. Such an
object can be passed to BPackageWriter::Init() and is passed on to
PackageWriterImpl and WriterImplBase.
* PackageFileHeapWriter: Add compressionLevel property and pass the
value on to ZlibCompressor.
* package add/create: Add options -0 ... -9 to specify the compression
level to be used.

package_repo: Removes dependency to package

* Move StandardErrorOutput to libpackage and into proper namespace to
avoid "package_repo" having to reuse the "package" source file.
* package_repo: Fix incorrect includes of "package.h".

Add "package add" command.

Add "package add" command.

package: Explicitly use B_HPKG_COMPRESSION_NONE

Allow specifying the compression level for package creation

* Introduce BPackageWriterParameters which comprises all parameters
for package creation, currently flags and compression level. Such an
object can be passed to BPackageWriter::Init() and is passed on to
PackageWriterImpl and WriterImplBase.
* PackageFileHeapWriter: Add compressionLevel property and pass the
value on to ZlibCompressor.
* package add/create: Add options -0 ... -9 to specify the compression
level to be used.

package_repo: Removes dependency to package

* Move StandardErrorOutput to libpackage and into proper namespace to
avoid "package_repo" having to reuse the "package" source file.
* package_repo: Fix incorrect includes of "package.h".

Add "package add" command.

Add "package add" command.