fix some issues with IM and long pathnames (with spaces)

server-tools/instance-manager/instance_options.cc:
  small cleanup
  -and-
  convert mysqld_path to the proper syntax after reading
server-tools/instance-manager/parse_output.cc:
  stop using get_word since it stops at spaces.  Now we just read the entire line and trim spaces.

server-tools/instance-manager/instance_options.cc

@@ -47,14 +47,12 @@ static inline int create_mysqld_command(Buffer *buf,
   if (buf->get_size()) /* malloc succeeded */
   {
 #ifdef __WIN__
-    buf->append(position, "\"", 1);
+    buf->append(position++, "\"", 1);
-    position++;
 #endif
     buf->append(position, mysqld_path_str, mysqld_path_len);
     position+= mysqld_path_len;
 #ifdef __WIN__
-    buf->append(position, "\"", 1);
+    buf->append(position++, "\"", 1);
-    position++;
 #endif
     /* here the '\0' character is copied from the option string */
     buf->append(position, option, option_len);
@@ -340,6 +338,10 @@ int Instance_options::complete_initialization(const char *default_path,
   if (!mysqld_path && !(mysqld_path= strdup_root(&alloc, default_path)))
     goto err;
 
+  // it's safe to cast this to char* since this is a buffer we are allocating
+  char* end= convert_dirname((char*)mysqld_path, mysqld_path, NullS);
+  end[-1] = 0;
+
   mysqld_path_len= strlen(mysqld_path);
 
   if (mysqld_port)

server-tools/instance-manager/parse_output.cc

@@ -24,6 +24,20 @@
 #include "portability.h"
 
 
+void trim_space(const char **text, uint *word_len)
+{
+	const char* start = *text;
+	while (*start != 0 && *start == ' ')
+		start++;
+	*text = start;
+
+	int len= strlen(start);
+	const char* end= start + len - 1;
+	while (end > start && (*end == ' ' || *end == '\r' || *end == '\n'))
+		end--;
+	*word_len= (end - start)+1;
+}
+
 /*
   Parse output of the given command
 
@@ -85,14 +99,13 @@ int parse_output_and_get_value(const char *command, const char *word,
       Get the word, which might contain non-alphanumeric characters. (Usually
       these are '/', '-' and '.' in the path expressions and filenames)
     */
-    get_word((const char **) &linep, &found_word_len, NONSPACE);
     if (!strncmp(word, linep, wordlen))
     {
       /*
         If we have found the word, return the next one (this is usually
         an option value) or the whole line (if flag)
       */
-      linep+= found_word_len;                     /* swallow the previous one */
+      linep+= wordlen;                      /* swallow the previous one */
       if (flag & GET_VALUE)
       {
         get_word((const char **) &linep, &found_word_len, NONSPACE);