Merge pull request #75 from nem0/fs_refactor

Fs refactor and some of the issues fixed.
- static array -> removed unused stuff.
map insert and erase fixed
c style allocation macros; string and podarray use reallocate
stack allocator - closes #81
check if type is trivially copyable in container where it's a must
Merge branch 'master' into fs_refactor
Merge remote-tracking branch 'remotes/origin/master' into fs_refactor