Fix #1519: preserve pel fraction when clipping MV

See merge request jvet/VVCSoftware_VTM!2182

Fix #1535: don't use deprecated std::unary_function

See merge request !2179

m_videoIOYuvSEIFGSFile may be used without being initialized after !2132

See merge request jvet/VVCSoftware_VTM!2181

fix compilation with gcc 11: 'misleading-indentation' error after !2177

See merge request !2180

Fix variable names

See merge request jvet/VVCSoftware_VTM!2177

Fix indentation and braces

See merge request !2178

Remove T0196_SELECTIVE_RDOQ macro

See merge request jvet/VVCSoftware_VTM!2176

Fix indentation and braces

See merge request !2174

Fix indentation and braces, improve readability

See merge request !2173

Fix variable names

See merge request !2172

Remove unused macro

See merge request !2175

Fix copyright year

See merge request !2171