Fixing tests due to some results

Makefile will now only test for Linux systems, a work around in the
makefile due to some silly redefine restrictions.

uptime and w now won't error due to being one user logged in, thanks to
Sami for the patch

kill processes by pid test commented out due to false negatives

pwdx process 1 check also commented out due to false negatives

testsuite/Makefile.am

@@ -3,7 +3,7 @@ export DEJAGNU
 
 if LINUX
 # Programs that are expected across the board
-DEJATOOL = \
+test_tools = \
 		   free \
 		   pgrep \
 		   pkill \
@@ -15,6 +15,8 @@ DEJATOOL = \
 		   sysctl slabtop pmap kill
 
 endif
+
+DEJATOOL = $(test_tools)
 		
 	
 EXTRA_DIST = \