Added a brief description of curl-config, mentioned that curl_* functions are

the only public ones

docs/LIBCURL

@@ -6,8 +6,8 @@
 
                    How To Use Libcurl In Your C/C++ Program
 
- [ libcurl can be used directly from within your PHP or Perl programs as well,
+ [ libcurl can be used directly from within your Java, PHP, Perl, Ruby or Tcl
-   look elsewhere for documentation on this ]
+   programs as well, look elsewhere for documentation on this ]
 
  The interface is meant to be very simple for applictions/programmers, hence
  the name "easy". We have therefore minimized the number of entries.
@@ -49,6 +49,29 @@ The Easy Interface
 
  For details on these, read the separate man pages.
 
+Linking with libcurl
+
+ Staring with 7.7.2 (on unix-like machines), there's a tool named curl-config
+ that gets installed with the rest of the curl stuff when 'make install' is
+ performed.
+
+ curl-config is added to make it easier for applications to link with
+ libcurl and developers to learn about libcurl and how to use it.
+
+ Run 'curl-config --libs' to get the (additional) linker options you need to
+ link with the particular version of libcurl you've installed.
+
+ For details, see the curl-config.1 man page.
+
+libcurl symbol names
+
+ All public functions in the libcurl interface are prefixed with 'curl_' (with
+ a lowercase c). You can find other functions in the library source code, but
+ other prefixes indicate the functions are private and may change without
+ further notice in the next release.
+
+ Only use documented functions and functionality!
+
 Portability
 
  libcurl works *exactly* the same, on any of the platforms it compiles and