Assorted spelling fixes.

dlls/comctl32/monthcal.c

@@ -331,7 +331,7 @@ static BOOL MONTHCAL_IsSelRangeValid(const MONTHCAL_INFO *infoPtr,
 }
 
 /* Used in MCM_SETRANGE/MCM_SETSELRANGE to determine resulting time part.
-   Milliseconds are intentionaly not validated. */
+   Milliseconds are intentionally not validated. */
 static BOOL MONTHCAL_ValidateTime(const SYSTEMTIME *time)
 {
   if((time->wHour > 24) || (time->wMinute > 59) || (time->wSecond > 59))

dlls/jscript/activex.c

@@ -156,7 +156,7 @@ static HRESULT ActiveXObject_value(script_ctx_t *ctx, vdisp_t *jsthis, WORD flag
     }
 
     if(arg_cnt(dp) != 1) {
-        FIXME("unsuported arg_cnt %d\n", arg_cnt(dp));
+        FIXME("unsupported arg_cnt %d\n", arg_cnt(dp));
         return E_NOTIMPL;
     }
 

dlls/msi/tests/install.c

@@ -2903,7 +2903,7 @@ static void test_lastusedsource(void)
     r = MsiInstallProductA("msifile0.msi", "REMOVE=ALL");
     ok(r == ERROR_SUCCESS, "Expected ERROR_SUCCESS, got %u\n", r);
 
-    /* seperate cabinet file */
+    /* separate cabinet file */
 
     size = MAX_PATH;
     lstrcpyA(value, "aaa");

dlls/shell32/tests/shlexec.c

@@ -1391,8 +1391,8 @@ static DWORD WINAPI hooked_WaitForInputIdle(HANDLE process, DWORD timeout)
  * a problem for us because ShellExecute will assume that an app is ready to
  * receive DDE messages after it has called WaitForInputIdle() on that app.
  * To work around that we install our own version of WaitForInputIdle() that
- * will wait for the child to explicitly tell it it's ready. We do that by
- * changing the entry for WaitForInputIdle() in the shell32 import address
+ * will wait for the child to explicitly tell us that it is ready. We do that
+ * by changing the entry for WaitForInputIdle() in the shell32 import address
  * table.
  */
 static void hook_WaitForInputIdle(void *new_func)