gzipvfs.cpp,tarvfs.cpp: Allow the pfnRead off parameter to be the current stream offset, and in the tar case anything within the current-file in the tar stream.
IPRT: Added a flag to the gzip decompressor I/O stream for accepting zLib headers as well as gzip ones. Need this for XAR and other purposes.
IPRT: Added compression to the gzip VFS I/O stream class (RTZipGzipCompressIoStream) and implemented compression in the RTGzip example tool (testcase\RTGzip.exe).
IPRT: -Wunused-parameter.
copyright year.
IPRT: Implemented / adjusted zlib status code conversion.
Config.kmk, mangling, Runtime: use static zlib for Solaris.
IPRT: Fixed unused variable warnings.
iprt/tarvfs: Working on validating and parsing the tar headers.
zipgzip.cpp -> gzipvfs.cpp