Improve MSID -> MSAL error conversion

[oldalton]

Current error conversion is very error prone, if developer forgets to convert error in MSAL or ADAL

Instead, convert error when creating in in MSID space to avoid developer forgetting to convert it

This can be achieved if MSID creates "error delegate" that it calls before returning the final error. ADAL and MSAL would implement it and return appropriate error.