Update Formula: dcraw

Update to version 1.438
Fix compile for non-standard homebrew location like /opt/local
Add manpage
Make update comment visible in caveats

Signed-off-by: Adam Vandenberg <flangy@gmail.com>

Formula/dcraw.rb

@@ -1,21 +1,34 @@
 require 'formula'
 
+class DcrawManual <Formula
+  url 'http://www.cybercom.net/~dcoffin/dcraw/dcraw.1'
+  md5 '6ba2a797c4ad698589f83171d6b36396'
+  version '1.50'
+end
+
 class Dcraw <Formula
-  # Note that the file is versioned, but not in source control,
-  # so updates are random and break the MD5. If you try to install
-  # and get an MD5 mismatch, check for a newer version number on
-  # http://www.cybercom.net/~dcoffin/dcraw/RCS/dcraw.c,v
-  # and update the version and MD5 in a patch. Thanks.
   homepage 'http://www.cybercom.net/~dcoffin/dcraw/'
   url 'http://www.cybercom.net/~dcoffin/dcraw/dcraw.c'
-  version '1.436'
-  md5 'd680b17ce75ab1c791fe92b467f1005d'
+  version '1.438'
+  md5 '108f0c14a5be4d092c7ffa8460044fb3'
 
   depends_on 'jpeg'
   depends_on 'little-cms'
 
   def install
+    ENV.append_to_cflags "-I#{HOMEBREW_PREFIX}/include -L#{HOMEBREW_PREFIX}/lib"
     system "#{ENV.cc} -o dcraw #{ENV.cflags} dcraw.c -lm -ljpeg -llcms"
     bin.install 'dcraw'
+    DcrawManual.new.brew { man1.install Dir['*'] }
+  end
+
+  def caveats; <<-EOS.undent
+    Note that the files are versioned, but not in source control,
+    so updates are random and break the MD5. If you try to install
+    and get an MD5 mismatch, check for a newer version number on
+    the following files and update the version and MD5 in a patch. Thanks!
+    http://www.cybercom.net/~dcoffin/dcraw/RCS/dcraw.c,v
+    http://www.cybercom.net/~dcoffin/dcraw/RCS/dcraw.1,v
+    EOS
   end
 end