Reorder static libraries

MinGW is picky about order
Set more appropriate defaults

Many conf items don't belong in Thumb and have reasonable defaults at
their usage points. Also the SCM cache size of 16 was probably too large
for many platforms.
Don't fall back on the filesystem for writes

This renders the finder GUIs useless by polluting them with directories
relative to the CWD.
Change printf format from size to int

Apparently z for size isn't standard.