Init, adding corrade,magnum,magnum-plugins,magnum-integration,magnum-extras, and magnum-examples 2025.47_1

common/build-profiles/README

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+BUILD PROFILES
+==============
+
+This directory contains build profiles to set properties on native builds
+for a specific architecture:
+
+	- XBPS_TRIPLET		(the compiler triplet)
+	- XBPS_CFLAGS		(C compiler flags for host compiler)
+	- XBPS_CXXFLAGS		(C++ compiler flags for the host compiler)
+	- XBPS_FFLAGS		(Fortran compiler flags for the host compiler)
+	- XBPS_RUST_TARGET	(the compiler triplet for usage by cargo)
+	- XBPS_ZIG_TARGET	(the arch-os-abi target triplet for zig)
+	- XBPS_ZIG_CPU		(the cpu/feature set for zig)
+
+These properties are also set in a cross environment, but the compiler
+flags are not added into the global flags. XBPS_RUST_TARGET is also
+exposed as RUST_BUILD instead of RUST_TARGET.