Log Message:
retroarch: update to version 1.7.5.

Changes:

    CAMERA: Fix Video4Linux2 driver that broke years ago.
    CONFIG: Add 'Reset To Defaults' setting in Configurations. Thi will reset \ 
your config file to defaults.
    CHEATS: Add support for Rumble when increase or decrease by the rumble value.
    CHEATS: Add cheat variables to allow for updating large portions of memory.
    CHEEVOS: Prevent loading states before achievements are fully loaded.
    CRT: New porches and interlaced bug fix.
    CRT: New functionality, ability to switch between 15KHz and 31KHz, etc.
    COMMON: Support for "OEM-102" key (usually '' on Euro keyboards).
    INPUT: Add new menu toggle combos 'L3 + R' and 'L + R' (useful for Switch).
    LOCALIZATION: Update Portuguese / Brazilian translation.
    LOCALIZATION: Update Japanese translation.
    LOCALIZATION: Update Polish translation.
    LOCALIZATION: Update Spanish translation.
    MENU: Add dropdown lists for many settings.
    MENU: Fix crash that could happen when changing core's options on Android.
    MENU/QT/WIMP: Add option to rename playlists.
    MENU/QT/WIMP: Add option to filter extensions inside archives when adding to \ 
a playlist.
    MENU/QT/WIMP: Rename playlist entries with 2 single clicks.
    MENU/QT/WIMP: Fix shader parameter checkboxes not working
    METAL: Add screenshot support.
    NETPLAY: Save lobby details received back from server after first announcement.
    OPENGL/GLX: Implement Adaptive VSync - GLX_EXT_swap_control_tear.
    OPENGL/WGL: Implement Adaptive VSync - WGL_EXT_swap_control_tear.
    RUNAHEAD: Fix performance degradation that could happen over time (after \ 
approx. 30 mins). Fixed input IDs outside of range 0-35 causing slow performance \ 
in runahead.
    VULKAN: Fix race condition in threaded mailbox emulation.
    VULKAN: Maintenance fixes.