Fixed issue #3 - cache describe info (to help prevent reaching the fields governor limit)

Fixed issue #5 - add new functions isAuthorizedTo… 
Fixed issue #6 - change get…Fields functions to accept sObjectType instead of sObject

Author: apex.esapi

doc/SFDCAccessControlException.ExceptionType.html

@@ -114,6 +114,12 @@ <H2>
 &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;This error type is a generic record not found error.</TD>
 </TR>
 <TR BGCOLOR="white" CLASS="TableRowColor">
+<TD><CODE><B><A HREF="SFDCAccessControlException.ExceptionType.html#FIELD_NOT_FOUND">FIELD_NOT_FOUND</A></B></CODE>
+
+<BR>
+&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;This error type is a generic field not found error.</TD>
+</TR>
+<TR BGCOLOR="white" CLASS="TableRowColor">
 <TD><CODE><B><A HREF="SFDCAccessControlException.ExceptionType.html#OBJECT_ACCESS_VIOLATION">OBJECT_ACCESS_VIOLATION</A></B></CODE>
 
 <BR>
@@ -195,6 +201,18 @@ <H2>
 <DL>
 </DL>
 </DL>
+<HR>
+
+<A NAME="FIELD_NOT_FOUND"><!-- --></A><H3>
+FIELD_NOT_FOUND</H3>
+<PRE>
+public static final <A HREF="SFDCAccessControlException.ExceptionType.html" title="enum in &lt;Unnamed&gt;">SFDCAccessControlException.ExceptionType</A> <B>FIELD_NOT_FOUND</B></PRE>
+<DL>
+<DD>This error type is a generic field not found error.
+<P>
+<DL>
+</DL>
+</DL>
 
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