use standard automake rules rather than hand coding the install rules

--- a/Makefile.am
+++ b/Makefile.am
@@ -24,24 +24,13 @@
 MIT.TXT \
 depcomp
 
+bin_SCRIPTS = share/zthread-config
 
-## install the config script
-install-exec-hook:
-	$(mkinstalldirs) $(bindir)
-	$(INSTALL_PROGRAM) $(top_srcdir)/share/zthread-config $(bindir)
+aclocaldir = $(datadir)/aclocal
+aclocal_DATA = share/zthread.m4 share/pthread.m4
 
-## install the config script & m4 macros
-install-data-hook:
-	$(mkinstalldirs) $(datadir)/aclocal
-	$(INSTALL_DATA) $(top_srcdir)/share/zthread.m4 $(datadir)/aclocal
-	$(INSTALL_DATA) $(top_srcdir)/share/pthread.m4 $(datadir)/aclocal
-	mkdir -p $(DESTDIR)$(includedir)/zthread
-	cp -pR $(top_srcdir)/include/zthread $(DESTDIR)$(includedir)/
-
-## uninstall the config script & m4 macros
-uninstall-local:
-	-rm -rf $(datadir)/aclocal/pthread.m4
-	-rm -rf $(datadir)/aclocal/zthread.m4
+zincludedir = $(includedir)/zthread
+zinclude_HEADERS = include/zthread/*.h
 
 distclean-local: 
 	-rm -rf $(top_srcdir)/$(PACKAGE)-$(VERSION).tar.gz
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -21,8 +21,6 @@
 INCLUDES = -I$(top_srcdir)/include
 SUBDIRS=.
 
-libdir=$(prefix)/lib
-
 lib_LTLIBRARIES = libZThread.la
 
 libZThread_la_LIBADD=@LINKER_OPTIONS@ @EXTRA_LINKER_OPTIONS@