Merge pull request #29 from estebanlm/master

- libssh2 and lingit2 sould be working
Fix issue 13154 alphaSourceBlendBits8
Merge pull request #36 from estebanlm/master

- removing -fno-cse-follow-jumps from compiler flags for mac
change libasound to asound2
Merge pull request #30 from nicolas-cellier-aka-nice/issue13154

Fix issue 13154 alphaSourceBlendBits8
Merge pull request #44 from JeanBaptisteArnaud/raspberrypi

change libasound to asound2
restore old version to restore numeric keyboard (why this file was lost, is a mistery)
Merge branch 'master' of github.com:pharo-project/pharo-vm