Add dependency on zlib when building with libmagic (#1084)
Add dependency on zlib when building with libmagic (#1084)

This fixes linking against static libmagic.
VirusTotal/yara,hillu/yara,wxsBSD/yara,plusvic/yara,plusvic/yara,hillu/yara,wxsBSD/yara,cblichmann/yara,VirusTotal/yara,hillu/yara,plusvic/yara,cblichmann/yara,cblichmann/yara,wxsBSD/yara,plusvic/yara,VirusTotal/yara,hillu/yara,pombredanne/yara,pombredanne/yara,wxsBSD/yara,pombredanne/yara,VirusTotal/yara,VirusTotal/yara,pombredanne/yara,hillu/yara,wxsBSD/yara,pombredanne/yara,plusvic/yara,cblichmann/yara,cblichmann/yara