libmatroska2: replace libavutil lzo with lzokay

This is a version of lzokay without the compression part and ported to C.

Based on AxioDL/lzokay@671e2b9
Originally found in https://github.com/jackoalan/lzokay.git

It's MIT licensed so more friendly than the LGPL 2.1+ of libavutil.

Author: robUx4

libmatroska2/CMakeLists.txt

@@ -61,8 +61,8 @@ if (CONFIG_ZLIB)
 endif(CONFIG_ZLIB)
 
 if (CONFIG_LZO1X)
-  add_subdirectory("lavu_lzo")
-  target_link_libraries("matroska2" PRIVATE $<BUILD_INTERFACE:lavu_lzo>)
+  add_subdirectory("lzokay")
+  target_link_libraries("matroska2" PRIVATE $<BUILD_INTERFACE:lzokay>)
 endif(CONFIG_LZO1X)
 
 if (CONFIG_BZLIB)

libmatroska2/lavu_lzo/CMakeLists.txt

@@ -0,0 +1,13 @@
+# lzokay library API ported to C only containing the decompressor
+
+add_library("lzokay" STATIC)
+set(LZOKAY_GROUP_PUBLIC_HEADERS
+    lzokay.h
+)
+set(LZOKAY_GROUP_SOURCES lzokay.c)
+
+target_sources("lzokay" PRIVATE ${LZOKAY_GROUP_SOURCES} ${LZOKAY_GROUP_PUBLIC_HEADERS})
+target_include_directories("lzokay" PUBLIC ".")
+set_target_properties("lzokay" PROPERTIES 
+    PUBLIC_HEADER "${LZOKAY_GROUP_PUBLIC_HEADERS}"
+)