All source files moved to a subdirectory
removing subfolder
Add 'src_mysqlinterface/' from commit '7f7564de664ba330e916ef542f98e4f5ed5a0f29'

git-subtree-dir: src_mysqlinterface
git-subtree-mainline: e09c908234ae0851587100f2e3e916b78da027ea
git-subtree-split: 7f7564de664ba330e916ef542f98e4f5ed5a0f29
Modification on sub project