SD Card Alpha Sorting

First iteration of alphabetical sorting for SD cards, both
slow+efficient and fast+rammy. Option for folders to sort first, last,
or not at all.

Marlin/cardreader.cpp

@@ -54,7 +54,7 @@ void  CardReader::lsDive(const char *prepend,SdFile parent)
   dir_t p;
   uint8_t cnt=0;
  
-  while (parent.readDir(p, longFilename) > 0)
+  while (parent.readDir(p, diveFilename) > 0)
   {
     if( DIR_IS_SUBDIR(&p) && lsAction!=LS_Count && lsAction!=LS_GetFilename) // hence LS_SerialPrint
     {
@@ -91,8 +91,8 @@ void  CardReader::lsDive(const char *prepend,SdFile parent)
     {
       if (p.name[0] == DIR_NAME_FREE) break;
       if (p.name[0] == DIR_NAME_DELETED || p.name[0] == '.'|| p.name[0] == '_') continue;
-      if (longFilename[0] != '\0' &&
+      if (diveFilename[0] != '\0' &&
-          (longFilename[0] == '.' || longFilename[0] == '_')) continue;
+          (diveFilename[0] == '.' || diveFilename[0] == '_')) continue;
       if ( p.name[0] == '.')
       {
         if ( p.name[1] != '.')

Marlin/cardreader.h

@@ -46,7 +46,11 @@ public:
 #ifdef SDCARD_SORT_ALPHA
   void presort();
   void flush_presort();
+<<<<<<< HEAD
   void getfilename_sorted(const uint16_t nr);
+=======
+  void getfilename_sorted(const uint8_t nr);
+>>>>>>> SD Card Alpha Sorting
 #endif
 
 
@@ -60,22 +64,37 @@ public:
 public:
   bool saving;
   bool logging;
+<<<<<<< HEAD
   bool sdprinting;
   bool cardOK;
   char filename[FILENAME_LENGTH];
   char longFilename[LONG_FILENAME_LENGTH];
+=======
+  bool sdprinting ;  
+  bool cardOK;
+  char filename[FILENAME_LENGTH];
+  char diveFilename[LONG_FILENAME_LENGTH];
+>>>>>>> SD Card Alpha Sorting
   bool filenameIsDir;
   int lastnr; //last number of the autostart;
 private:
   SdFile root,*curDir,workDir,workDirParents[MAX_DIR_DEPTH];
   uint16_t workDirDepth;
 #ifdef SDCARD_SORT_ALPHA
+<<<<<<< HEAD
   uint16_t sort_count;
   uint8_t *sort_order;
   #if SORT_USES_MORE_RAM
     char **sortshort;
     char **sortnames;
     uint8_t *isDir;
+=======
+  #if SORT_USES_MORE_RAM
+    uint16_t sort_count;
+    char **sortnames;
+  #else
+    uint8_t sort_order[SORT_LIMIT];
+>>>>>>> SD Card Alpha Sorting
   #endif
 #endif
   Sd2Card card;