Changed multi-line C comments into another style.

The left side doesn't look unbalanced.

src/cc65/output.c

@@ -81,8 +81,8 @@ void SetOutputName (const char* Name)
 
 void MakeDefaultOutputName (const char* InputFilename)
 /* If the name of the output file is empty or NULL, the name of the output
- * file is derived from the input file by adjusting the file name extension.
- */
+** file is derived from the input file by adjusting the file name extension.
+*/
 {
     if (OutputFilename == 0 || *OutputFilename == '\0') {
         /* We don't have an output file for now */
@@ -111,8 +111,8 @@ void OpenOutputFile ()
 
 void OpenDebugOutputFile (const char* Name)
 /* Open an output file for debugging purposes. Will call Fatal() in case of
- * failures.
- */
+** failures.
+*/
 {
     /* Output file must not be open and we must have a name*/
     PRECONDITION (OutputFile == 0);
@@ -147,8 +147,8 @@ void CloseOutputFile ()
 
 int WriteOutput (const char* Format, ...)
 /* Write to the output file using printf like formatting. Returns the number
- * of chars written.
- */
+** of chars written.
+*/
 {
     va_list ap;
     int CharCount;