[LyX/master] Fix compilation of the template ACM-sigplan.lyx

[Scott Kostyshak]

commit 34eadf5d498718b4faa51820961f9d7c09d4a6d0
Author: Scott Kostyshak <skost...@lyx.org>
Date:   Wed Apr 8 13:29:13 2015 -0400

    Fix compilation of the template ACM-sigplan.lyx
    
    This template was only reported as failing to compile by LyX as of
    0a6120cb. I do not know how long this template was actually failing
    to compile without error. The problem was that the class requires
    \doi to be defined. This might not have been a requirement in
    previous versions of the class.
    
    Thanks to Enrico for finding the problem and solution.

diff --git a/lib/layouts/sigplanconf.layout b/lib/layouts/sigplanconf.layout
index 349c94a..61bf94a 100644
--- a/lib/layouts/sigplanconf.layout
+++ b/lib/layouts/sigplanconf.layout
@@ -120,6 +120,13 @@ Style PreprintFooter
 End
 
 
+Style DOI
+       CopyStyle       CopyrightYear
+       LatexName       doi
+       LabelString     "Digital Object Identifier:"
+End
+
+
 Input stdtitle.inc
 Input stdstruct.inc
 
diff --git a/lib/templates/ACM-sigplan.lyx b/lib/templates/ACM-sigplan.lyx
index edfdc2a..2c24f94 100644
--- a/lib/templates/ACM-sigplan.lyx
+++ b/lib/templates/ACM-sigplan.lyx
@@ -149,6 +149,20 @@ is ignored unless document class option 'preprint' is used
 
 \end_layout
 
+\begin_layout DOI
+10.1145/143365.143376
+\begin_inset Note Note
+status collapsed
+
+\begin_layout Plain Layout
+the digital identifier assigned at doi.acm.org
+\end_layout
+
+\end_inset
+
+
+\end_layout
+
 \begin_layout Title
 Example ACM Paper
 \begin_inset Foot