Update services.xconfig

Removing hashd.tv from services.xconfig for now, since they have been
down for an extended period of time.
Can always be added back in later if they do come up again.
updated version to 0.6 (test)
Cache QSV/NVENC support on window init in advanced settings
Properly reenable checkboxes in SetDefaults
Use bHasNVENC instead of bHasQSV for NVENC checkbox
Fix inconsistency for new strings in en locale
Fixed break in String API export

String::operator!=, String::operator==, and String::Compare functions
were all originally functions that returned BOOL.  I changed them to
return native 'bool' instead without realizing that it would break the
API.  So, sadly, I have to change them back to BOOL to prevent
incompatibilities with existing plugins.
Merge branch 'master' of https://github.com/jp9000/OBS
changed version to 0.60 instead of 0.6