perl: perlmod.mk: use 'install' for host binaries

When installing a host perl module, the host perl binary in the staging
dir is replaced by using 'cp'.  However, if the binary is running in a
parallel job, cp will fail with a text file busy error.  Use
$(INSTALL_BIN), which unliks the file first to avoid the error.

Signed-off-by: Eneas U de Queiroz <cotequeiroz@gmail.com>

lang/perl/perlmod.mk

@@ -35,8 +35,8 @@ PERLMOD_TESTSDIR:=/usr/share/perl/perlmod-tests
 define perlmod/host/relink
 	rm -f $(1)/Makefile.aperl
 	$(MAKE) -C $(1) perl
-	$(CP) $(1)/perl $(PERL_CMD)
-	$(CP) $(1)/perl $(STAGING_DIR_HOSTPKG)/usr/bin/perl
+	$(INSTALL_BIN) $(1)/perl $(PERL_CMD)
+	$(INSTALL_BIN) $(1)/perl $(STAGING_DIR_HOSTPKG)/usr/bin/perl
 endef
 
 define perlmod/host/Configure