Base Browser's .mozconfigs.

Bug 17858: Cannot create incremental MARs for hardened builds.
Define HOST_CFLAGS, etc. to avoid compiling programs such as mbsdiff
(which is part of mar-tools and is not distributed to end-users) with
ASan.

Bug 21849: Don't allow SSL key logging.

Bug 25741 - TBA: Disable features at compile-time

Define MOZ_ANDROID_NETWORK_STATE and MOZ_ANDROID_LOCATION

Bug 27623 - Export MOZILLA_OFFICIAL during desktop builds

This fixes a problem where some preferences had the wrong default value.
Also see bug 27472 where we made a similar fix for Android.

Bug 29859: Disable HLS support for now

Bug 30463: Explicitly disable MOZ_TELEMETRY_REPORTING

Bug 32493: Disable MOZ_SERVICES_HEALTHREPORT

Bug 33734: Set MOZ_NORMANDY to False

Bug 33851: Omit Parental Controls.

Bug 40252: Add --enable-rust-simd to our tor-browser mozconfig files

Bug 41584: Move some configuration options to base-browser level