Move various compression libraries into single subdirectory

This improves the organization of the cpukit.

Closes #4912.

spec/build/cpukit/librtemscpu.yml

@@ -526,6 +526,9 @@ links:
 - role: build-dependency
   uid: vckey
 source:
+- cpukit/compression/xz/xz_crc32.c
+- cpukit/compression/xz/xz_dec_lzma2.c
+- cpukit/compression/xz/xz_dec_stream.c
 - cpukit/dev/flash/flashdev.c
 - cpukit/dev/i2c/eeprom.c
 - cpukit/dev/i2c/fpga-i2c-slave.c
@@ -974,9 +977,6 @@ source:
 - cpukit/libmisc/uuid/unpack.c
 - cpukit/libmisc/uuid/unparse.c
 - cpukit/libmisc/uuid/uuid_time.c
-- cpukit/libmisc/xz/xz_crc32.c
-- cpukit/libmisc/xz/xz_dec_lzma2.c
-- cpukit/libmisc/xz/xz_dec_stream.c
 - cpukit/libstdthreads/call_once.c
 - cpukit/libstdthreads/cnd.c
 - cpukit/libstdthreads/mtx.c

spec/build/cpukit/libz.yml

@@ -15,20 +15,20 @@ install:
 install-path: ${BSP_LIBDIR}
 links: []
 source:
-- cpukit/zlib/adler32.c
-- cpukit/zlib/compress.c
-- cpukit/zlib/crc32.c
-- cpukit/zlib/deflate.c
-- cpukit/zlib/gzclose.c
-- cpukit/zlib/gzlib.c
-- cpukit/zlib/gzread.c
-- cpukit/zlib/gzwrite.c
-- cpukit/zlib/infback.c
-- cpukit/zlib/inffast.c
-- cpukit/zlib/inflate.c
-- cpukit/zlib/inftrees.c
-- cpukit/zlib/trees.c
-- cpukit/zlib/uncompr.c
-- cpukit/zlib/zutil.c
+- cpukit/compression/zlib/adler32.c
+- cpukit/compression/zlib/compress.c
+- cpukit/compression/zlib/crc32.c
+- cpukit/compression/zlib/deflate.c
+- cpukit/compression/zlib/gzclose.c
+- cpukit/compression/zlib/gzlib.c
+- cpukit/compression/zlib/gzread.c
+- cpukit/compression/zlib/gzwrite.c
+- cpukit/compression/zlib/infback.c
+- cpukit/compression/zlib/inffast.c
+- cpukit/compression/zlib/inflate.c
+- cpukit/compression/zlib/inftrees.c
+- cpukit/compression/zlib/trees.c
+- cpukit/compression/zlib/uncompr.c
+- cpukit/compression/zlib/zutil.c
 target: z
 type: build