man: Squash multiline NAME entries

The norm for man pages is that the NAME line is formatted as a single
line without line breaks. The patched pages violate that norm,
and break various tools that process man page input
(such as my own scripts to format pages for man7.org).

Squash the NAME lines in the pages that have this problem, so that
a single line is produced. This necessarily entails abbreviating
the descriptive text somewhat, but I don't think this is a loss.

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
diff --git a/man/keyctl_instantiate.3 b/man/keyctl_instantiate.3
index eb93b6e..95f4057 100644
--- a/man/keyctl_instantiate.3
+++ b/man/keyctl_instantiate.3
@@ -10,15 +10,7 @@
 .TH KEYCTL_INSTANTIATE 3 "4 May 2006" Linux "Linux Key Management Calls"
 .\"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
 .SH NAME
-keyctl_assume_authority \- assume the authority to instantiate a key
-.br
-keyctl_instantiate \- instantiate a key from flat data
-.br
-keyctl_instantiate_iov \- instantiate a key from segmented data
-.br
-keyctl_reject \- negatively instantiate a key specifying search error
-.br
-keyctl_negate \- negatively instantiate a key
+keyctl_assume_authority, keyctl_instantiate, keyctl_instantiate_iov, keyctl_reject, keyctl_negate \- key instantiation functions
 .\"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
 .SH SYNOPSIS
 .nf
diff --git a/man/keyctl_link.3 b/man/keyctl_link.3
index fa65837..fac9257 100644
--- a/man/keyctl_link.3
+++ b/man/keyctl_link.3
@@ -10,8 +10,7 @@
 .TH KEYCTL_LINK 3 "4 May 2006" Linux "Linux Key Management Calls"
 .\"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
 .SH NAME
-keyctl_link \- link a key to a keyring
-keyctl_unlink \- unlink a key from a keyring
+keyctl_link, keyctl_unlink \- link/unlink a key to/from a keyring
 .\"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
 .SH SYNOPSIS
 .nf
diff --git a/man/recursive_key_scan.3 b/man/recursive_key_scan.3
index c29f62e..e46c5b5 100644
--- a/man/recursive_key_scan.3
+++ b/man/recursive_key_scan.3
@@ -10,9 +10,7 @@
 .TH RECURSIVE_KEY_SCAN 3 "10 Mar 2011" Linux "Linux Key Utility Calls"
 .\"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
 .SH NAME
-recursive_key_scan \- apply a function to all keys in a keyring tree
-.br
-recursive_session_key_scan \- apply a function to all keys in the session keyring tree
+recursive_key_scan, recursive_session_key_scan \- apply a function to all keys in a keyring tree
 .\"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
 .SH SYNOPSIS
 .nf