the homebrew launcher. - force align the stack pointer to 8 bytes. - add --gc-sections to the link specs
add a warning when using an unsupported hbl version.
- use a custom crt0 to allow overriding __heap_size and __linear_heap_size - add a setting for maximum heap size. unallocated memory can be freely mapped by the core. - add better detection of the extra memory available when running from the HBL.