Man pages: Use similar syntax for synopsis as in xz.

The man pages of lzmainfo, xzmore, and xzdec had similar
constructs as the man page of xz had before the commit
eb6ca9854b8eb9fbf72497c1cf608d6b19d2d494. Eric S. Raymond
didn't mention these man pages in his bug report, but
it's nice to be consistent.
diff --git a/src/lzmainfo/lzmainfo.1 b/src/lzmainfo/lzmainfo.1
index f2b93b4..ce38eee 100644
--- a/src/lzmainfo/lzmainfo.1
+++ b/src/lzmainfo/lzmainfo.1
@@ -4,14 +4,14 @@
 .\" This file has been put into the public domain.
 .\" You can do whatever you want with this file.
 .\"
-.TH LZMAINFO 1 "2010-09-27" "Tukaani" "XZ Utils"
+.TH LZMAINFO 1 "2013-06-30" "Tukaani" "XZ Utils"
 .SH NAME
 lzmainfo \- show information stored in the .lzma file header
 .SH SYNOPSIS
 .B lzmainfo
 .RB [ \-\-help ]
 .RB [ \-\-version ]
-.RI [ file ]...
+.RI [ file... ]
 .SH DESCRIPTION
 .B lzmainfo
 shows information stored in the
diff --git a/src/scripts/xzmore.1 b/src/scripts/xzmore.1
index 30dad68..9613974 100644
--- a/src/scripts/xzmore.1
+++ b/src/scripts/xzmore.1
@@ -4,15 +4,15 @@
 .\"
 .\" License: GNU GPLv2+
 .\"
-.TH XZMORE 1 "2010-09-27" "Tukaani" "XZ Utils"
+.TH XZMORE 1 "2013-06-30" "Tukaani" "XZ Utils"
 .SH NAME
 xzmore, lzmore \- view xz or lzma compressed (text) files
 .SH SYNOPSIS
 .B xzmore
-.RI [ "filename ..." ]
+.RI [ file... ]
 .br
 .B lzmore
-.RI [ "filename ..." ]
+.RI [ file... ]
 .SH DESCRIPTION
 .B  xzmore
 is a filter which allows examination of
diff --git a/src/xzdec/xzdec.1 b/src/xzdec/xzdec.1
index 7cc9be5..1e5ced9 100644
--- a/src/xzdec/xzdec.1
+++ b/src/xzdec/xzdec.1
@@ -4,17 +4,17 @@
 .\" This file has been put into the public domain.
 .\" You can do whatever you want with this file.
 .\"
-.TH XZDEC 1 "2010-09-27" "Tukaani" "XZ Utils"
+.TH XZDEC 1 "2013-06-30" "Tukaani" "XZ Utils"
 .SH NAME
 xzdec, lzmadec \- Small .xz and .lzma decompressors
 .SH SYNOPSIS
 .B xzdec
-.RI [ option ]...
-.RI [ file ]...
+.RI [ option... ]
+.RI [ file... ]
 .br
 .B lzmadec
-.RI [ option ]...
-.RI [ file ]...
+.RI [ option... ]
+.RI [ file... ]
 .SH DESCRIPTION
 .B xzdec
 is a liblzma-based decompression-only tool for