Update usage of libexec for roguelikes.

Since "libexec" folders under the Cellar are already private per
formula, there's no reason to create an additional folder underneath
for namespacing.

Removed the extra folder level from these formulas.

Formula/angband.rb

@@ -6,16 +6,14 @@ class Angband <Formula
   @homepage='http://rephial.org/'
 
   def install
-    angband_libexec = libexec+"angband"
-
     system "./configure", "--prefix=#{prefix}",
                           "--enable-curses",
                           "--disable-x11",
                           "--disable-sdltest",
-                          "--with-libpath=#{angband_libexec}"
+                          "--with-libpath=#{libexec}"
     system "make"
     # Install manually; 'make install' doesn't work.
     bin.install "src/angband"
-    angband_libexec.install Dir['lib/*']
+    libexec.install Dir['lib/*']
   end
 end

Formula/nethack.rb

@@ -17,14 +17,11 @@ class Nethack <Formula
   @md5='21479c95990eefe7650df582426457f9'
 
   def patches
-    {
-      :p1 =>
-["http://github.com/adamv/nethack-osx/raw/82992eb6e4d8c76b05037579126293d644ef971d/patches/nethack-osx-343.patch"]
-    }
+    "http://github.com/adamv/nethack-osx/raw/82992eb6e4d8c76b05037579126293d644ef971d/patches/nethack-osx-343.patch"
   end
 
   def skip_clean? path
-    path == libexec + "nethack/save"
+    path == libexec + "save"
   end
 
   def install
@@ -34,29 +31,22 @@ class Nethack <Formula
     # Symlink makefiles
     system 'sh sys/unix/setup.sh'
     
-    ## We are not using the default installer
-    # Install to a sane location, geez.
-    nethackdir = "#{prefix}/libexec/nethack"
-    system "mkdir -p #{nethackdir}"
-    
     inreplace "include/config.h",
       '#  define HACKDIR "/usr/games/lib/nethackdir"',
-      "#define HACKDIR \"#{nethackdir}\""
+      "#define HACKDIR \"#{libexec}\""
     
     # Make the data first, before we munge the CFLAGS
     system "cd dat;make"
     
     Dir.chdir 'dat' do
-      nethack_libexec = (libexec+'nethack')
-      
       %w(perm logfile).each do |f|
         system "touch #{f}"
-        nethack_libexec.install f
+        libexec.install f
       end
       
       # Stage the data
-      nethack_libexec.install %w(help hh cmdhelp history opthelp wizhelp dungeon license data oracles options rumors quest.dat)
-      nethack_libexec.install Dir['*.lev']
+      libexec.install %w(help hh cmdhelp history opthelp wizhelp dungeon license data oracles options rumors quest.dat)
+      libexec.install Dir['*.lev']
     end
     
     # Make the game
@@ -64,6 +54,6 @@ class Nethack <Formula
     system 'cd src;make'
     
     bin.install 'src/nethack'
-    system "mkdir #{prefix}/libexec/nethack/save"
+    FileUtils.mkdir libexec+'save'
   end
 end

Formula/omega.rb

@@ -8,11 +8,8 @@ class Omega <Formula
   def install
     # 'make install' is weird, so we do it ourselves
     
-    omega_libexec = libexec + "omega"
-    omega_libexec.mkpath
-
     # Set up our target folders
-    inreplace "defs.h", "#define OMEGALIB \"./omegalib/\"", "#define OMEGALIB \"#{omega_libexec}/\""
+    inreplace "defs.h", "#define OMEGALIB \"./omegalib/\"", "#define OMEGALIB \"#{libexec}/\""
 
     # Don't alias CC this way; also, don't need that ncurses include path
     inreplace "Makefile", "CC = gcc -I/usr/include/ncurses", ""
@@ -27,6 +24,6 @@ class Omega <Formula
     system "make"
 
     bin.install "omega"
-    omega_libexec.install Dir['omegalib/*']
+    libexec.install Dir['omegalib/*']
   end
 end