#242 fix loader creation bug that unlinks the wrong fractal tree files
Support gcc 4.9 in cmake, fix uninitialized value warnings
moved/cleaned up gcc-ar/gcc-ranlib checking #245
Merge pull request #245 from Tokutek/gcc-4.9-support

Support gcc 4.9 in cmake, fix uninitialized value warnings
#244 skip jemalloc build if it is not in the third party directory
fixes #226 When serializing a nonleaf node, include the offsets stored
in each message tree. This removes a sort during deserialization, which
can be expensive when there are many messages and I/O is fast. This
change supports auto-upgrade from older versions.