Changed cpu frequency for all Linux platforms, added RPI specific cpu temp command and removed irrelevant gpu temp for all ARM platforms.
[AEChannelInfo] The condition should be a conjunction.

This additionally reverts commit add8fab77bd3a646569164a79d96f1ee2b57ac0f.
[CoreAudio/IOS]  Assignment of function parameter has no effect outside the function.
[Cores] Style: Reduce scope of variables.
[PulseAESound] Correct oder of initializer list.
[Cores] Silence message "Checking if unsigned variable ... is less than zero".
[LinuxRendererGL(ES)]Consecutive return statements are unnecessary.
[CrystalHD/OpenMax] Make the classes non-copyable.
[Sinks] Function parameter 'format' should be passed by reference.
[DVDInputStreamNavigator] Pass function parameter by reference.
[Cores] Prefix ++/-- operators should be preferred for non-primitive types.
[DVDAudio] Common realloc mistake: 'm_pBuffer' nulled but not freed upon failure.
Disable Hibernate and Suspend related power options for Raspberry & Co. without (working) Upower/HAL/CK/Systemd support. Usually this devices dont support Suspend & Hibernate.
GUIFontTTFDX: prevent crash on unallocated texture or unavailable Direct3D device
CGUIFontTTFGL::Begin: prevent crash on unallocated texture
CGUIFontTTFDX::ReallocTexture: Don't try to copy from empty texture
CGUIFontTTFGL::ReallocTexture log warning when allocated texture smaller than requested
CGUIFontTTFBase::CacheCharacter: free allocated glyph on error
GUIFontTTF: move m_textureScale calculation to right places
CGUIFontTTFBase::CacheCharacter: correctly process empty glyphs (spaces)
Empty glyphs (spaces) has zero width and if empty glyph is first cached letter than texture isn't allocated and function complains about "no texture".