Prefix the test binaries

So that we avoid clashing with distribution binaries.

tests/Makefile.am

@@ -2,19 +2,19 @@ BUILT_SOURCES = manager-dbus-glue.h device-dbus-glue.h
 noinst_HEADERS = $(BUILT_SOURCES)
 CLEANFILES = $(BUILT_SOURCES)
 
-bin_PROGRAMS = verify enroll list
+bin_PROGRAMS = fprintd-verify fprintd-enroll fprintd-list
 
-verify_SOURCES = verify.c
-verify_CFLAGS = $(WARN_CFLAGS) $(GLIB_CFLAGS)
-verify_LDADD = $(GLIB_LIBS)
+fprintd_verify_SOURCES = verify.c
+fprintd_verify_CFLAGS = $(WARN_CFLAGS) $(GLIB_CFLAGS)
+fprintd_verify_LDADD = $(GLIB_LIBS)
 
-enroll_SOURCES = enroll.c
-enroll_CFLAGS = $(WARN_CFLAGS) $(GLIB_CFLAGS)
-enroll_LDADD = $(GLIB_LIBS)
+fprintd_enroll_SOURCES = enroll.c
+fprintd_enroll_CFLAGS = $(WARN_CFLAGS) $(GLIB_CFLAGS)
+fprintd_enroll_LDADD = $(GLIB_LIBS)
 
-list_SOURCES = list.c
-list_CFLAGS = $(WARN_CFLAGS) $(GLIB_CFLAGS)
-list_LDADD = $(GLIB_LIBS)
+fprintd_list_SOURCES = list.c
+fprintd_list_CFLAGS = $(WARN_CFLAGS) $(GLIB_CFLAGS)
+fprintd_list_LDADD = $(GLIB_LIBS)
 
 manager-dbus-glue.h: ../src/manager.xml
 	dbus-binding-tool --prefix=fprint_manager --mode=glib-client $< --output=$@