base-system Add support for pcregrep command to search within bzip2-compressed files, through sys-libs/zlib. Build 16 bit PCRE library. Add support for command line editing to pcretest, through sys-libs/readline. Limit match recursion to 8192; if disabled, the default limit is used, which is the same as the match limit. Add support for pcregrep command to search within gzip-compressed files, through app-arch/gzip.