all: make buildable again for new 'misc.h' header file

With the 4 header files removed in the previous patch,
this commit just changes all those obsolete references
to that new consolidated 'misc.h' header file instead.

Signed-off-by: Jim Warner <james.warner@comcast.net>

proc/readproc.c

@@ -38,10 +38,9 @@
 
 #include "devname.h"
 #include "escape.h"
-#include "namespace.h"
+#include "misc.h"
 #include "pwcache.h"
 #include "readproc.h"
-#include "version.h"
 
 // sometimes it's easier to do this manually, w/o gcc helping
 #ifdef PROF