Fix typos in comments (chek -> check)

Signed-off-by: Stefan Weil <weil@mail.berlios.de>
Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>

exec.c

@@ -2061,7 +2061,7 @@ void cpu_physical_memory_reset_dirty(ram_addr_t start, ram_addr_t end,
     /* we modify the TLB cache so that the dirty bit will be set again
        when accessing the range */
     start1 = (unsigned long)qemu_safe_ram_ptr(start);
-    /* Chek that we don't span multiple blocks - this breaks the
+    /* Check that we don't span multiple blocks - this breaks the
        address comparisons below.  */
     if ((unsigned long)qemu_safe_ram_ptr(end - 1) - start1
             != (end - 1) - start) {

target-ppc/STATUS

@@ -11,7 +11,7 @@ INSN: instruction set.
 SPR:  special purpose registers set
       OK => all SPR registered (but some may be fake)
       KO => some SPR are missing or should be removed
-      ?  => uncheked
+      ?  => unchecked
 MSR:  MSR bits definitions
       OK => all MSR bits properly defined
       KO => MSR definition is incorrect