change the old code style to comply with Doxgen format
[Impaction]
add comments for every function
[Reference Info]
add comments to achieve the highest standard of code quality matrix
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@5079 6f19259b-4bc3-4df7-8a09-765794883524
solve the x64 exception issue when unloading iSCSI driver
[Impaction]
add some handler for failure branch and prohibit the additional ISCSI INITIATOR NAME PROTOCOL from being installed.
[Reference Info]
this bug is reported by DELL. it causes an exception in x64 on unloading iscsi driver.
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@4941 6f19259b-4bc3-4df7-8a09-765794883524