Fix pre-version OBC/NMS package remap ordering
Fix incomplete inheritance remapping for Minecart Mania compatibility. Fixes #339.

If during plugin load inheritance information for a given class
is not available in the global inheritance map, it will be looked
up on-demand from the plugin (only) via URLClassLoaderInheritanceProvider.
Previously, inheritance was only added before each class load. On-
demand inheritance remapping fixes incomplete remaps where a plugin
references an NMS plugin subclass not yet loaded, as observed in
Minecart Mania Reborn.

For performance, results are cached. Implements #87 without #97,
see: https://github.com/MinecraftPortCentral/MCPC-Plus/commit/46f8821a0662192e92a5402ee6d0c306c45c6095

Requires latest snapshot of SpecialSource.