Converted plain enums to enum class for better type safety: - xmlreader: Converted two local Space enums to enum class and removed redundant SPACE_ prefix from enum values (NONE, SPAN, BREAK, START) - xmlsecurity: Converted EqualMode enum to enum class - xmlsecurity: Converted local State enum in CompatDNCryptoAPI to enum class Updated all usages across 8 files to use scoped enum syntax. Change-Id: I27fd7280bccad72a43cda3b669b1f0926c34271c Reviewed-on: https://gerrit.libreoffice.org/c/core/+/196207 Tested-by: Jenkins Reviewed-by: Hossein <hossein@libreoffice.org>