Samples for calling different "native" C libraries.

**zlib** general purpose compression library

* CBL_ZLIB.cob: wrapper for zlib
* sample_ZLIB.cob: sample caller for CBL_ZLIB doing
	* get and output version number of zlib
	* reading textstream.bin pass it to zlib for uncompress
	* output result to textstream.out
* textstream.bin: random stream data found in gnucobol.pdf

**MD5** MD5 message digest

* md5er.cob: Can use OpenSSL or mbedtls libraries
