build: pass --express flag
build: pass --express flag

This will only build libraries that are actually changed, skipping
dependents.

This will make incremental builds faster when making small changes
to a few libraries.

fusetools/fuselibs-public,fusetools/fuselibs-public,fusetools/fuselibs-public,fusetools/fuselibs-public,fusetools/fuselibs-public,fusetools/fuselibs-public,fusetools/fuselibs-public