app, plug-ins, libgimp*: clean out all remaining trailing spaces/tabs.

Rather than just discovering them by chance, a simple grep and some
search and replace are much more efficient! :-)
Cleaning only done on C and automake files.

libgimpwidgets/gimpeevl.c

@@ -453,7 +453,6 @@ gimp_eevl_lex (GimpEevl *eva)
       gimp_eevl_lex_accept_count (eva, 1, s[0]);
     }
   else
-    
     {
       /* Attempt to parse a numeric value */
       gchar  *endptr = NULL;

plug-ins/imagemap/imap_cern_lex.c

@@ -1865,7 +1865,6 @@ static int yy_init_globals (void)
 /* cern_lex_destroy is for both reentrant and non-reentrant scanners. */
 int cern_lex_destroy  (void)
 {
-    
     /* Pop the buffer stack, destroying each element. */
 	while(YY_CURRENT_BUFFER){
 		cern__delete_buffer(YY_CURRENT_BUFFER  );

plug-ins/imagemap/imap_csim_lex.c

@@ -1507,7 +1507,6 @@ static int yy_get_next_buffer (void)
  */
     void csim_restart  (FILE * input_file )
 {
-    
 	if ( ! YY_CURRENT_BUFFER ){
         csim_ensure_buffer_stack ();
 		YY_CURRENT_BUFFER_LVALUE =
@@ -1524,7 +1523,6 @@ static int yy_get_next_buffer (void)
  */
     void csim__switch_to_buffer  (YY_BUFFER_STATE  new_buffer )
 {
-    
 	/* TODO. We should be able to replace this entire function body
 	 * with
 	 *		csim_pop_buffer_state();
@@ -1597,7 +1595,6 @@ static void csim__load_buffer_state  (void)
  */
     void csim__delete_buffer (YY_BUFFER_STATE  b )
 {
-    
 	if ( ! b )
 		return;
 
@@ -1808,7 +1805,6 @@ YY_BUFFER_STATE csim__scan_buffer  (char * base, yy_size_t  size )
  */
 YY_BUFFER_STATE csim__scan_string (yyconst char * yystr )
 {
-    
 	return csim__scan_bytes(yystr,strlen(yystr) );
 }
 
@@ -1883,7 +1879,6 @@ static void yy_fatal_error (yyconst char* msg )
  */
 int csim_get_lineno  (void)
 {
-        
     return csim_lineno;
 }
 
@@ -1926,7 +1921,6 @@ char *csim_get_text  (void)
  */
 void csim_set_lineno (int  line_number )
 {
-    
     csim_lineno = line_number;
 }
 
@@ -1987,7 +1981,6 @@ static int yy_init_globals (void)
 /* csim_lex_destroy is for both reentrant and non-reentrant scanners. */
 int csim_lex_destroy  (void)
 {
-    
     /* Pop the buffer stack, destroying each element. */
 	while(YY_CURRENT_BUFFER){
 		csim__delete_buffer(YY_CURRENT_BUFFER  );

plug-ins/imagemap/imap_ncsa_lex.c

@@ -1843,7 +1843,6 @@ static int yy_init_globals (void)
 /* ncsa_lex_destroy is for both reentrant and non-reentrant scanners. */
 int ncsa_lex_destroy  (void)
 {
-    
     /* Pop the buffer stack, destroying each element. */
 	while(YY_CURRENT_BUFFER){
 		ncsa__delete_buffer(YY_CURRENT_BUFFER  );

plug-ins/pygimp/gimpmodule.c

@@ -1682,7 +1682,6 @@ id2vectors(PyObject *self, PyObject *args)
 static PyObject *
 pygimp_export_image (PyObject *self, PyObject *args, PyObject *kwargs)
 {
-    
     PyGimpImage *img;
     PyGimpDrawable *drw = NULL;
     gchar *format_name = NULL;