lrzsz: add lrz/lsz symlinks

Many systems support automatic zmodem transfers without needing to first
manually run the zmodem utils.  But the expectation is to run `lrz` and
not `rz`.  So install symlinks for lrz->rz and lsz->sz to support this.

This also includes a small fix to also remove sz when cleaning.

[Peter: use addprefix rather than patsubst]
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>

CHANGES

@@ -3,7 +3,7 @@
 	Fixes all over the tree.
 
 	Updated/fixed packages: bash, bind, busybox, libglib2,
-	libcurl, libmad, midori, module-init-tools, mtd-utils,
+	libcurl, libmad, lrzsz, midori, module-init-tools, mtd-utils,
 	openssh, openssl, pciutils, qt, sqlite, sysstat, webkit, zlib
 
 	Issues resolved (http://bugs.uclibc.org):

package/lrzsz/lrzsz.mk

@@ -39,10 +39,12 @@ endef
 define LRZSZ_INSTALL_TARGET_CMDS
 	cp $(@D)/src/lrz $(TARGET_DIR)/usr/bin/rz
 	cp $(@D)/src/lsz $(TARGET_DIR)/usr/bin/sz
+	ln -s rz $(TARGET_DIR)/usr/bin/lrz
+	ln -s sz $(TARGET_DIR)/usr/bin/lsz
 endef
 
 define LRZSZ_CLEAN_CMDS
-	rm -f $(TARGET_DIR)/usr/bin/rz
+	rm -f $(addprefix $(TARGET_DIR)/usr/bin/,rz sz lrz lsz)
 	-$(MAKE) -C $(@D) clean
 endef