Split installation targets into install-bin and install-doc.

install-bin will only install the program, and install-doc will install
the documentation.  The main install target still installs both.

Makefile

@@ -1,61 +1,69
 PREFIX=/usr/local
 export PREFIX
 PYTHON=python
 
 help:
 	@echo 'Commonly used make targets:'
 	@echo '  all          - build program and documentation'
 	@echo '  install      - install program and man pages to PREFIX ($(PREFIX))'
 	@echo '  install-home - install with setup.py install --home=HOME ($(HOME))'
 	@echo '  local        - build C extensions for inplace usage'
 	@echo '  tests        - run all tests in the automatic test suite'
 	@echo '  test-foo     - run only specified tests (e.g. test-merge1)'
 	@echo '  dist         - run all tests and create a source tarball in dist/'
 	@echo '  clean        - remove files created by other targets'
 	@echo '                 (except installed files or dist source tarball)'
 	@echo
 	@echo 'Example for a system-wide installation under /usr/local:'
 	@echo '  make all && su -c "make install" && hg version'
 	@echo
 	@echo 'Example for a local installation (usable in this directory):'
 	@echo '  make local && ./hg version'
 
 all: build doc
 
 local:
 	$(PYTHON) setup.py build_ext -i
 
 build:
 	$(PYTHON) setup.py build
 
 doc:
 	$(MAKE) -C doc
 
 clean:
 	-$(PYTHON) setup.py clean --all # ignore errors of this command
 	find . -name '*.py[co]' -exec rm -f '{}' ';'
 	rm -f MANIFEST mercurial/__version__.py mercurial/*.so tests/*.err
 	$(MAKE) -C doc clean
 
-install: all
+install: install-bin install-doc
+
+install-bin: build
 	$(PYTHON) setup.py install --prefix="$(PREFIX)" --force
+
+install-doc: doc
 	cd doc && $(MAKE) $(MFLAGS) install
 
-install-home: all
+install-home: install-home-bin install-home-doc
+
+install-home-bin: build
 	$(PYTHON) setup.py install --home="$(HOME)" --force
+
+install-home-doc: doc
 	cd doc && $(MAKE) $(MFLAGS) PREFIX="$(HOME)" install
 
 dist:	tests dist-notests
 
 dist-notests:	doc
 	TAR_OPTIONS="--owner=root --group=root --mode=u+w,go-w,a+rX-s" $(PYTHON) setup.py sdist --force-manifest
 
 tests:
 	cd tests && $(PYTHON) run-tests.py
 
 test-%:
 	cd tests && $(PYTHON) run-tests.py $@
 
 
-.PHONY: help all local build doc clean install install-home dist dist-notests tests
-
+.PHONY: help all local build doc clean install install-bin install-doc \
+	install-home install-home-bin install-home-doc dist dist-notests tests