Fix build on AppVeyor/CygWin by installing extra build-dependencies (#1468)
Fix build on AppVeyor/CygWin by installing extra build-dependencies (#1468)


hillu/yara,wxsBSD/yara,hillu/yara,VirusTotal/yara,pombredanne/yara,wxsBSD/yara,wxsBSD/yara,wxsBSD/yara,hillu/yara,VirusTotal/yara,wxsBSD/yara,hillu/yara,VirusTotal/yara,VirusTotal/yara,pombredanne/yara,hillu/yara,VirusTotal/yara,pombredanne/yara,pombredanne/yara,pombredanne/yara