Minor typo and style corrections.

Signed-off-by: Michele Calgaro <michele.calgaro@yahoo.it>

tdecore/kdebug.cpp

@@ -401,7 +401,7 @@ kdbgstream::~kdbgstream() {
         if (backtrace.ascii() != NULL) {
                 fprintf(stderr, "%s", backtrace.latin1());
         }
-	*this << "\n";
+	*this << '\n';
     }
 }
 

tdecore/kdebug.h

@@ -601,7 +601,7 @@ TDECORE_EXPORT kdbgstream kdDebug(bool cond, int area = 0);
 /**
  * \relates TDEGlobal
  * Returns a backtrace.
- * @param levels the number of levels of the backtrace. Defauls to -1 (as much as avalible).
+ * @param levels the number of levels of the backtrace. Defaults to -1 (as much as available).
  * @return a backtrace
  * @since 3.1
  */
@@ -610,7 +610,7 @@ TDECORE_EXPORT TQString kdBacktrace(int levels=-1);
  * \relates TDEGlobal
  * Writes a backtrace to the given file descriptor. In contrast to 
  * kdBacktrace, this function doesn't call any malloc(). So it supposed to be
- * used in situations than any extra memmmory allocation may lead to yet 
+ * used in situations in which any extra memory allocation may lead to yet 
  * another crash. As a limitation it doesn't produce any symbol demangling.
  * @param fd a file descriptor to write to. Defaults to 2 (stderr)
  * @since 14.0