[unord] Use 'key equality predicate' consistently. (#1241)

Replaces occasional uses of 'key equality function'.

Fixes #630.

Author: jensmaurer

source/containers.tex

@@ -7666,7 +7666,7 @@
 \begin{itemdescr}
 \pnum
 \effects Constructs an empty \tcode{unordered_map} using the
-specified hash function, key equality function, and allocator, and
+specified hash function, key equality predicate, and allocator, and
 using at least \tcode{n} buckets.  For the default constructor,
 the number of buckets is \impldef{default number of buckets in
 \tcode{unordered_map}}.
@@ -7694,7 +7694,7 @@
 \begin{itemdescr}
 \pnum
 \effects Constructs an empty \tcode{unordered_map} using the
-specified hash function, key equality function, and allocator, and
+specified hash function, key equality predicate, and allocator, and
 using at least \tcode{n} buckets. If \tcode{n} is not
 provided, the number of buckets is \impldef{default number of buckets in
 \tcode{unordered_map}}. Then
@@ -8159,7 +8159,7 @@
 \begin{itemdescr}
 \pnum
 \effects Constructs an empty \tcode{unordered_multimap} using the
-specified hash function, key equality function, and allocator, and
+specified hash function, key equality predicate, and allocator, and
 using at least \tcode{n} buckets.  For the default constructor,
 the number of buckets is \impldef{default number of buckets in
 \tcode{unordered_multimap}}.
@@ -8187,7 +8187,7 @@
 \begin{itemdescr}
 \pnum
 \effects Constructs an empty \tcode{unordered_multimap} using the
-specified hash function, key equality function, and allocator, and
+specified hash function, key equality predicate, and allocator, and
 using at least \tcode{n} buckets. If \tcode{n} is not
 provided, the number of buckets is \impldef{default number of buckets in
 \tcode{unordered_multimap}}. Then
@@ -8454,7 +8454,7 @@
 \begin{itemdescr}
 \pnum
 \effects Constructs an empty \tcode{unordered_set} using the
-specified hash function, key equality function, and allocator, and
+specified hash function, key equality predicate, and allocator, and
 using at least \tcode{n} buckets.  For the default constructor,
 the number of buckets is \impldef{default number of buckets in
 \tcode{unordered_set}}.
@@ -8482,7 +8482,7 @@
 \begin{itemdescr}
 \pnum
 \effects Constructs an empty \tcode{unordered_set} using the
-specified hash function, key equality function, and allocator, and
+specified hash function, key equality predicate, and allocator, and
 using at least \tcode{n} buckets. If \tcode{n} is not
 provided, the number of buckets is \impldef{default number of buckets in
 \tcode{unordered_set}}. Then
@@ -8721,7 +8721,7 @@
 \begin{itemdescr}
 \pnum
 \effects Constructs an empty \tcode{unordered_multiset} using the
-specified hash function, key equality function, and allocator, and
+specified hash function, key equality predicate, and allocator, and
 using at least \tcode{n} buckets.  For the default constructor,
 the number of buckets is \impldef{default number of buckets in
 \tcode{unordered_multiset}}.
@@ -8749,7 +8749,7 @@
 \begin{itemdescr}
 \pnum\effects
 Constructs an empty \tcode{unordered_multiset} using the
-specified hash function, key equality function, and allocator, and
+specified hash function, key equality predicate, and allocator, and
 using at least \tcode{n} buckets. If \tcode{n} is not
 provided, the number of buckets is \impldef{default number of buckets in
 \tcode{unordered_multiset}}. Then