DragonFlyBSD/src 85c5dc6gnu/usr.bin/cc50/backends/guts/guts-cobjc Makefile, gnu/usr.bin/cc50/backends/guts/guts-common Makefile

gcc50: Switch backends to use internal lib framework.

Previously backends where implicitly using bsd.hostlib.mk that have few
unwanted side effects (backends are install targets). Avoid that.
No functional change for current master users.

Tested-with: WORLD_CCVER and _DEFAULT_CCVER combinations.
DeltaFile
+12-2gnu/usr.bin/cc50/backends/guts/guts-common/Makefile
+12-2gnu/usr.bin/cc50/backends/guts/guts-target/Makefile
+11-2gnu/usr.bin/cc50/backends/guts/guts-cobjc/Makefile
+11-2gnu/usr.bin/cc50/backends/guts/guts-cxx/Makefile
+6-6gnu/usr.bin/cc50/backends/programs/cc1/Makefile
+5-5gnu/usr.bin/cc50/backends/programs/cc1plus/Makefile
+3-3gnu/usr.bin/cc50/backends/programs/cc1obj/Makefile
+2-2gnu/usr.bin/cc50/backends/programs/lto-wrapper/Makefile
+62-248 files

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