build: declare test targets as phony
Modern versions `make` will not build the 'test' target since a
directory exists with the same name.
$ grep -C1 '^test:' Makefile
test:
cd test; $(MAKE)
$ make test
make: 'test' is up to date.
Declare these targets as .PHONY to force make to build the test programs
even when the 'test' directory is present. Also use '&&' to concatenate
commands instead ';' to avoid running the second command when the first
fails.
Change-Id: Id561d7610f80b87b59c632801fa0a4b216feb42d
Reviewed-on: https://gerrit.openafs.org/13419
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>