Revert back to using vbuf for write buffering.

While it would be nice to serialize it and do a single write, there's
no native functions to create binary values from numbers in the
Synchronet JS object model at this time.

exec/load/recordfile.js

@@ -70,9 +70,7 @@ function RecordFile(filename, definition)
 	this.fields=definition;
 	this.RecordLength=getRecordLength(this.fields);
 	// A vbuf of a record length prevents more than one record from being in the buffer.
-	// Nope, it doesn't... use zero an force unbuffered.
-	// This will be super-slow until/unless some serialization is added.
-	if(!this.file.open(file_exists(this.file.name)?"rb+":"wb+",true,0)) {
+	if(!this.file.open(file_exists(this.file.name)?"rb+":"wb+",true,this.RecordLength)) {
 		return(null);
 	}
 	Object.defineProperty(this, 'length', {
@@ -99,8 +97,6 @@ RecordFileRecord.prototype.flushRead = function(keeplocked)
 	var flushed = false;
 	var tmp;
 
-	// With buffer size of zero, this isn't needed
-	return;
 	locked = (this.parent.locks.indexOf(this.Record) !== -1);
 	if (keeplocked === undefined) {
 		if (locked) {
@@ -119,7 +115,7 @@ RecordFileRecord.prototype.flushRead = function(keeplocked)
 			this.unLock();
 		}
 		this.parent.file.close();
-		if (!this.parent.file.open('rb+', true, 0)) {
+		if (!this.parent.file.open('rb+', true, this.parent.RecordLength)) {
 			throw new Error('Unable to re-open '+this.parent.file.name);
 		}
 		if (locked) {