miscellaneous: clean up trailing whitespace once again

An earlier commit attempted to cleanse our environment
of all useless trailing whitespace. But the effort did
not catch 'empty' lines with a single space before ^J.

This commit hopefully finishes off the earlier effort.
In the meantime, let's pray that contributors' editors
are configured so that such wasted crap is disallowed!

Reference(s):
commit fe75e26ab6

Signed-off-by: Jim Warner <james.warner@comcast.net>

proc/COPYING

@@ -133,7 +133,7 @@ such a program is covered only if its contents constitute a work based
 on the Library (independent of the use of the Library in a tool for
 writing it).  Whether that is true depends on what the Library does
 and what the program that uses the Library does.
- 
+
   1. You may copy and distribute verbatim copies of the Library's
 complete source code as you receive it, in any medium, provided that
 you conspicuously and appropriately publish on each copy an

proc/escape.c

@@ -37,20 +37,20 @@ static int escape_str_utf8(char *restrict dst, const char *restrict src, int buf
   int my_cells = 0;
   int my_bytes = 0;
   mbstate_t s;
- 
+
   memset(&s, 0, sizeof (s));
- 
+
   for(;;) {
     wchar_t wc;
     int len = 0;
-	
+
     if(my_cells >= *maxcells || my_bytes+1 >= bufsize)
       break;
- 
+
     if (!(len = mbrtowc (&wc, src, MB_CUR_MAX, &s)))
       /* 'str' contains \0 */
       break;
- 
+
     if (len < 0) {
       /* invalid multibyte sequence -- zeroize state */
       memset (&s, 0, sizeof (s));
@@ -65,7 +65,7 @@ static int escape_str_utf8(char *restrict dst, const char *restrict src, int buf
       src+=len;
       my_cells++;
       my_bytes++;
- 
+
     } else {
       /* multibyte - printable */
       int wlen = wcwidth(wc);
@@ -103,7 +103,7 @@ static int escape_str_utf8(char *restrict dst, const char *restrict src, int buf
   *dst = '\0';
 
   // fprintf(stderr, "maxcells: %d, my_cells; %d\n", *maxcells, my_cells);
- 
+
   *maxcells -= my_cells;
   return my_bytes;        // bytes of text, excluding the NUL
 }
@@ -124,10 +124,10 @@ int escape_str(char *restrict dst, const char *restrict src, int bufsize, int *m
   "????????????????????????????????"
   "????????????????????????????????"
   "????????????????????????????????";
- 
+
 #if (__GNU_LIBRARY__ >= 6) && (!defined(__UCLIBC__) || defined(__UCLIBC_HAS_WCHAR__))
   static int utf_init=0;
- 
+
   if(utf_init==0){
      /* first call -- check if UTF stuff is usable */
      char *enc = nl_langinfo(CODESET);
@@ -138,7 +138,7 @@ int escape_str(char *restrict dst, const char *restrict src, int bufsize, int *m
      return escape_str_utf8(dst, src, bufsize, maxcells);
   }
 #endif
-	
+
   if(bufsize > *maxcells+1) bufsize=*maxcells+1; // FIXME: assumes 8-bit locale
 
   for(;;){
@@ -152,7 +152,7 @@ int escape_str(char *restrict dst, const char *restrict src, int bufsize, int *m
     *(dst++) = c;
   }
   *dst = '\0';
- 
+
   *maxcells -= my_cells;
   return my_bytes;        // bytes of text, excluding the NUL
 }

proc/slab.c

@@ -146,7 +146,7 @@ static int parse_slabinfo20(struct slab_info **list, struct slab_stat *stats,
 
 		if (buffer[0] == '#')
 			continue;
-	
+
 		curr = get_slabnode();
 		if (!curr)
 			break;

proc/sysinfo.c

@@ -312,7 +312,7 @@ void eight_cpu_numbers(double *restrict uret, double *restrict nret, double *res
     new_y = 0;
     tmp_z = 0.0;
     new_z = 0;
- 
+
     FILE_TO_BUF(STAT_FILE,stat_fd);
     sscanf(buf, "cpu %Lu %Lu %Lu %Lu %Lu %Lu %Lu %Lu", &new_u, &new_n, &new_s, &new_i, &new_w, &new_x, &new_y, &new_z);
     ticks_past = (new_u+new_n+new_s+new_i+new_w+new_x+new_y+new_z)-(old_u+old_n+old_s+old_i+old_w+old_x+old_y+old_z);
@@ -360,7 +360,7 @@ void eight_cpu_numbers(double *restrict uret, double *restrict nret, double *res
 void loadavg(double *restrict av1, double *restrict av5, double *restrict av15) {
     double avg_1=0, avg_5=0, avg_15=0;
     char *savelocale;
- 
+
     FILE_TO_BUF(LOADAVG_FILE,loadavg_fd);
     savelocale = strdup(setlocale(LC_NUMERIC, NULL));
     setlocale(LC_NUMERIC, "C");

proc/version.c

@@ -45,7 +45,7 @@ void init_Linux_version(void) {
 
 #ifdef __linux__
     static struct utsname uts;
- 
+
     if (uname(&uts) == -1)	/* failure implies impending death */
 	exit(1);
 
@@ -66,7 +66,7 @@ void init_Linux_version(void) {
     fclose(fp);
     version_string_depth = sscanf(buf, "Linux version %d.%d.%d", &x, &y, &z);
 #endif /* __linux__ */
-	
+
     if ((version_string_depth < 2) ||		 /* Non-standard for all known kernels */
        ((version_string_depth < 3) && (x < 3))) /* Non-standard for 2.x.x kernels */
 #ifdef __linux__