It pulls external library and does not just switch some internal
feature.

Add proper bool logic to the conditional because by default
we consider it requested unless proven otherwise.
Sort out internal/external switch to also support system-libs switch.

This reverts commit 0dd1e3b1. Use
--disable-cmis now to avoid building all CMIS-related code.

SvNums is a define for SvUShort and SvULong, both are replaced with std::vector

In all places SvULongs have been replaced with std::vector, now can be totally removed.

Reverts Tor's a649aac6 - l10ntools
need more fine-grained disabling for iOS.

When the extension entry is not highlighted, replace LF to space
in description text, so words do not stick together in one line view.