Add a test for short (non-detached) signed messages
Add a test for short (non-detached) signed messages

Payshare/libsodium,tml/libsodium,SpiderOak/libsodium,eburkitt/libsodium,SpiderOak/libsodium,kytvi2p/libsodium,akkakks/libsodium,CyanogenMod/android_external_dnscrypt_libsodium,zhuqling/libsodium,CyanogenMod/android_external_dnscrypt_libsodium,netroby/libsodium,pyparallel/libsodium,paragonie-scott/libsodium,pmienk/libsodium,eburkitt/libsodium,optedoblivion/android_external_libsodium,rustyhorde/libsodium,JackWink/libsodium,JackWink/libsodium,pyparallel/libsodium,paragonie-scott/libsodium,rustyhorde/libsodium,netroby/libsodium,soumith/libsodium,SpiderOak/libsodium,rustyhorde/libsodium,donpark/libsodium,soumith/libsodium,optedoblivion/android_external_libsodium,paragonie-scott/libsodium,donpark/libsodium,pyparallel/libsodium,akkakks/libsodium,HappyYang/libsodium,GreatFruitOmsk/libsodium,zhuqling/libsodium,Payshares/libsodium,akkakks/libsodium,kytvi2p/libsodium,Payshares/libsodium,pmienk/libsodium,akkakks/libsodium,CyanogenMod/android_external_dnscrypt_libsodium,donpark/libsodium,Payshare/libsodium,kytvi2p/libsodium,netroby/libsodium,SpiderOak/libsodium,GreatFruitOmsk/libsodium,Payshare/libsodium,eburkitt/libsodium,mvduin/libsodium,pmienk/libsodium,GreatFruitOmsk/libsodium,optedoblivion/android_external_libsodium,rustyhorde/libsodium,mvduin/libsodium,HappyYang/libsodium,tml/libsodium,zhuqling/libsodium,HappyYang/libsodium,mvduin/libsodium,Payshares/libsodium,JackWink/libsodium,soumith/libsodium,tml/libsodium