Trailing whitespace in generated LICENSE files.

Fixes #1692.

cabal-install/Distribution/Client/Init/Licenses.hs

@@ -501,7 +501,7 @@ gplv3 = unlines
     , ""
     , "  \"Copyright\" also means copyright-like laws that apply to other kinds of"
     , "works, such as semiconductor masks."
-    , " "
+    , ""
     , "  \"The Program\" refers to any copyrightable work licensed under this"
     , "License.  Each licensee is addressed as \"you\".  \"Licensees\" and"
     , "\"recipients\" may be individuals or organizations."
@@ -934,7 +934,7 @@ gplv3 = unlines
     , "covered work in a country, or your recipient's use of the covered work"
     , "in a country, would infringe one or more identifiable patents in that"
     , "country that you have reason to believe are valid."
-    , "  "
+    , ""
     , "  If, pursuant to or in connection with a single transaction or"
     , "arrangement, you convey, or propagate by procuring conveyance of, a"
     , "covered work, and grant a patent license to some of the parties"
@@ -1097,7 +1097,6 @@ gplv3 = unlines
     , "the library.  If this is what you want to do, use the GNU Lesser General"
     , "Public License instead of this License.  But first, please read"
     , "<http://www.gnu.org/philosophy/why-not-lgpl.html>."
-    , ""
     ]
 
 agplv3 :: License
@@ -1902,7 +1901,7 @@ lgpl2 = unlines
     , "on the Library (independent of the use of the Library in a tool for"
     , "writing it).  Whether that is true depends on what the Library does"
     , "and what the program that uses the Library does."
-    , "  "
+    , ""
     , "  1. You may copy and distribute verbatim copies of the Library's"
     , "complete source code as you receive it, in any medium, provided that"
     , "you conspicuously and appropriately publish on each copy an"
@@ -2264,7 +2263,7 @@ lgpl3 = unlines
     , "the terms and conditions of version 3 of the GNU General Public"
     , "License, supplemented by the additional permissions listed below."
     , ""
-    , "  0. Additional Definitions. "
+    , "  0. Additional Definitions."
     , ""
     , "  As used herein, \"this License\" refers to version 3 of the GNU Lesser"
     , "General Public License, and the \"GNU GPL\" refers to version 3 of the GNU"
@@ -2365,7 +2364,7 @@ lgpl3 = unlines
     , "       a copy of the Library already present on the user's computer"
     , "       system, and (b) will operate properly with a modified version"
     , "       of the Library that is interface-compatible with the Linked"
-    , "       Version. "
+    , "       Version."
     , ""
     , "   e) Provide Installation Information, but only if you would otherwise"
     , "   be required to provide such information under section 6 of the"
@@ -2664,7 +2663,7 @@ mpl20 = unlines
     , "    means any form of the work other than Source Code Form."
     , ""
     , "1.7. \"Larger Work\""
-    , "    means a work that combines Covered Software with other material, in "
+    , "    means a work that combines Covered Software with other material, in"
     , "    a separate file or files, that is not Covered Software."
     , ""
     , "1.8. \"License\""