mfs: Function for %files section manipulation
mfs: Support for weak dependencies
mfs: Add mfslog() and related macros mfslog_*()
mfs: Free function for MfsPackage and MfsSpec
mfs: Add mfsSpecFromPackage() function
mfs: Add mfsSpecGetMacroContext()
mfs: Add new hook point MFS_HOOK_POINT_FINAL
mfs: Unify functions names (function prefix should match its first argument)
mfs: MfsContext refactored into MfsContext and MfsModuleContext
mfs: Implement mfsManagerFree()
mfs: Add PrettyName option to the hooks
mfs: Log each hook call
mfs: Add point at which a build callback is called to a log message
mfs: Use prettyname in log message during hook registration
mfs: Block adding of packages after MFS_HOOK_POINT_POSTCHECK state.
mfs: Add example module: langsubpackagesmodule