Allow to easily set a global path prefix for libraries and include files

Gets rid of a few DOS-specific Makefile hacks.

Corresponding to flashrom svn r1863.

Signed-off-by: Stefan Tauner <stefan.tauner@alumni.tuwien.ac.at>
Acked-by: Stefan Tauner <stefan.tauner@alumni.tuwien.ac.at>
diff --git a/README b/README
index b3e50a6..b8dec83 100644
--- a/README
+++ b/README
@@ -106,9 +106,9 @@
 
  You will need the following library source trees containing their compiled
  static libraries either in the parent directory of the flashrom source or
- specify the base folder on compile time with the DOSLIBS_BASE parameter.
+ specify the base folder on compile time with the LIBS_BASE parameter.
  The default as described above is equal to calling
-   'make djgpp-dos DOSLIBS_BASE=..'
+   'make djgpp-dos LIBS_BASE=..'
 
  To get and build said libraries...
  Download pciutils 3.1.5 and apply http://flashrom.org/File:Pciutils.patch.gz