This PR gets rid of calling the PVM sbrk functionality because it was disabled in the pallet. Instead we emulate the EVM linear memory heap internally with a static memory buffer.
I also changed the memory tests to run differentially; I found no reason why we our linear memory implementation needs to differ in intentional ways.
Max mem size is initially set conservatively to 64kb.
This PR gets rid of calling the PVM sbrk functionality because it was disabled in the pallet. Instead we emulate the EVM linear memory heap internally with a static memory buffer.
I also changed the memory tests to run differentially; I found no reason why we our linear memory implementation needs to differ in intentional ways.
Max mem size is initially set conservatively to 64kb.