Change references of 'EMail' to '[Ee]mail'

Depending on if it was the beginning of the sentence the EMail would
become 'Email' or 'email'.

Some references of 'Email' were changed to 'email' as well as those were
not in the beginning of a sentence.

A few places some consistency of capitalised email address (made lower
case) were changed to match other places of the same pattern.

1986/rules

@@ -37,8 +37,8 @@ RULES:	1) The source must be 1024 bytes or less.  NO exceptions!
 	   
 				decwrl!nsc!obfuscate
 
-	   Entries sent by UUCP Email will be confirmed starting 1-May-86.
-	   People are encouraged to submit entries via Email, however one may
+	   Entries sent by UUCP email will be confirmed starting 1-May-86.
+	   People are encouraged to submit entries via email, however one may
 	   mail entries the following address:
 
 		International Obfuscated C Code Contest
@@ -98,7 +98,7 @@ POLL:	We want to know what you think is the most poorly coded utility
 	2) Confine your vote to the standard set of commands.  I.e., don't
 	   flame about local commands or user contributed software.
 
-	3) Submit your votes via Email to:
+	3) Submit your votes via email to:
 
 	   	for 4.xBSD:  decwrl!nsc!bsd_util
 	   	for Sys V:   decwrl!nsc!sysV_util

1986/rules.html

@@ -197,8 +197,8 @@ below:</p>
    
             decwrl!nsc!obfuscate
 
-   Entries sent by UUCP Email will be confirmed starting 1-May-86.
-   People are encouraged to submit entries via Email, however one may
+   Entries sent by UUCP email will be confirmed starting 1-May-86.
+   People are encouraged to submit entries via email, however one may
    mail entries the following address:
 
     International Obfuscated C Code Contest
@@ -254,7 +254,7 @@ the guidelines below:</p>
 2) Confine your vote to the standard set of commands.  I.e., don&#39;t
    flame about local commands or user contributed software.
 
-3) Submit your votes via Email to:
+3) Submit your votes via email to:
 
     for 4.xBSD:  decwrl!nsc!bsd_util
     for Sys V:   decwrl!nsc!sysV_util