Author: Andrei Zavada <johnhommer@gmail.com>
Last-Update: Sat, 18 Apr 2015 23:27:38 +0300
Description: fix ctors of {MatchLeftEnd,LabeledMem}Comparator to enable sort/3 with g++-4.9

--- a/libMems/Aligner.cpp
+++ b/libMems/Aligner.cpp
@@ -939,7 +939,7 @@ public:
 	MatchLeftEndComparator( unsigned seq = 0 ){
 		m_seq = seq;
 	}
-	MatchLeftEndComparator( MatchLeftEndComparator& msc ){
+	MatchLeftEndComparator( const MatchLeftEndComparator& msc ){
 		m_seq = msc.m_seq;
 	}
 	// TODO??  make this do a wraparound comparison if all is equal?
--- a/libMems/Aligner.h
+++ b/libMems/Aligner.h
@@ -49,7 +49,7 @@ public:
 	LabeledMemComparator( uint seq ){
 		m_seq = seq;
 	}
-	LabeledMemComparator( LabeledMemComparator& lmc ){
+	LabeledMemComparator( const LabeledMemComparator& lmc ){
 		m_seq = lmc.m_seq;
 	}
 	boolean operator()(const LabeledMem& a, const LabeledMem& b) const{