Adds v850 support.

Fixes #751
Add rahash2 -d and -D to encode/decode base64 strings and files
Fix 'peio' sections at 0x80.. issue
Fixed the mach0 entrypoint, i think
Hack to avoid invalid strings in meta.. needs better workaround
Fix mips meta data issue and disasm ansi escape string filter problem
A fix for issue #936 - mips analyser not honouring endian
Fix #939 - broken b64 for large files
Fix CID 1214320
Fix CID 1214306
Fix CID 1214326
Fix CID 1214324
Fix CID 1214325
Fix CID 1214329
Fix CID 1214328
Fix CID 1214310
Fix CID 1214330
Fix CID 1214309
Fix CID 1214317
Fix CID 1214322