Bump version and soname for 5.2.0.

I know that soname != app version, but I skip AGE=1
in -version-info to make the soname match the liblzma
version anyway. It doesn't hurt anything as long as
it doesn't conflict with library versioning rules.

src/liblzma/Makefile.am

@@ -24,7 +24,7 @@ liblzma_la_CPPFLAGS = \
 	-I$(top_srcdir)/src/liblzma/simple \
 	-I$(top_srcdir)/src/common \
 	-DTUKLIB_SYMBOL_PREFIX=lzma_
-liblzma_la_LDFLAGS = -no-undefined -version-info 5:99:0
+liblzma_la_LDFLAGS = -no-undefined -version-info 7:0:2
 
 EXTRA_DIST += liblzma.map validate_map.sh
 if COND_SYMVERS

src/liblzma/api/lzma/version.h

@@ -21,9 +21,9 @@
  * Version number split into components
  */
 #define LZMA_VERSION_MAJOR 5
-#define LZMA_VERSION_MINOR 1
-#define LZMA_VERSION_PATCH 4
-#define LZMA_VERSION_STABILITY LZMA_VERSION_STABILITY_BETA
+#define LZMA_VERSION_MINOR 2
+#define LZMA_VERSION_PATCH 0
+#define LZMA_VERSION_STABILITY LZMA_VERSION_STABILITY_STABLE
 
 #ifndef LZMA_VERSION_COMMIT
 #	define LZMA_VERSION_COMMIT ""

src/liblzma/liblzma.map

@@ -95,7 +95,7 @@ global:
 	lzma_vli_size;
 };
 
-XZ_5.1.4beta {
+XZ_5.2 {
 global:
 	lzma_block_uncomp_encode;
 	lzma_cputhreads;