treewide: revise library packaging

- Annotate versionless libraries (such as libubox, libuci etc.) with a fixed
  ABI_VERSION resembling the source date of the last incompatible change
- Annotate packages shipping versioned library objects with ABI_VERSION
- Stop shipping unversioned library symlinks for packages with ABI_VERSION

Ref: https://openwrt.org/docs/guide-developer/package-policies#shared_libraries
Ref: https://github.com/KanjiMonster/maintainer-tools/blob/master/check-abi-versions.pl
Signed-off-by: Jo-Philipp Wich <jo@mein.io>

package/utils/fuse/Makefile

@@ -10,7 +10,7 @@ include $(INCLUDE_DIR)/kernel.mk
 
 PKG_NAME:=fuse
 PKG_VERSION:=2.9.7
-PKG_RELEASE:=1
+PKG_RELEASE:=2
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
 PKG_SOURCE_URL:=https://github.com/libfuse/libfuse/releases/download/$(PKG_NAME)-$(PKG_VERSION)
@@ -56,6 +56,7 @@ $(call Package/fuse/Default)
   TITLE+= (library)
   DEPENDS:=+kmod-fuse +libpthread
   SUBMENU:=Filesystem
+  ABI_VERSION:=1
 endef
 
 define Package/libfuse/description