Merge from trunk rev 1698: Update the toplevel README file to discuss

the needed apparmor compatibility patches, mention the profile
consistency check, and remove some variables that no longer need to
be set at build time.

README

@@ -30,13 +30,26 @@ AppArmor consists of several different parts:
 changehat/	source for using changehat with Apache, PAM and Tomcat
 common/		common makefile rules
 desktop/	empty
-kernel-patches/	patches for various kernel versions
+kernel-patches/	compatibility patches for various kernel versions
 libraries/	libapparmor source and language bindings
 parser/		source for parser/loader and corresponding documentation
 profiles/	configuration files, reference profiles and abstractions
 tests/		regression and stress testsuites
 utils/		high-level utilities for working with AppArmor
 
+--------------------------------------
+Important note on AppArmor kernel code
+--------------------------------------
+
+While most of the kernel AppArmor code has been accepted in the
+upstream Linux kernel, a few important pieces were not included. These
+missing pieces unfortunately are important bits for AppArmor userspace
+and kernel interaction; therefore we have included compatibility
+patches in the kernel-patches/ subdirectory, versioned by upstream
+kernel (2.6.37 patches should apply cleanly to 2.6.38 source).
+
+Without these patches applied to the kernel, the AppArmor userspace
+will not function correctly.
 
 ------------------------------------------
 Building and Installing AppArmor Userspace
@@ -49,10 +62,14 @@ the following order.
 libapparmor:
 $ cd ./libraries/libapparmor
 $ sh ./autogen.sh
-$ sh ./configure --prefix=/usr --with-perl
+$ sh ./configure --prefix=/usr --with-perl	# see below
 $ make
 $ make check
 
+[optional arguments to libapparmor's configure include --with-python
+ and --with-ruby, to generate python and ruby bindings to libapparmor,
+ respectively.]
+
 
 Utilities:
 $ cd utils
@@ -70,23 +87,23 @@ $ make install
 
 Apache mod_apparmor:
 $ cd changehat/mod_apparmor
-$ LIBS="-lapparmor" make
+$ make		# depends on libapparmor having been built first
 $ make install
 
 
 PAM AppArmor:
 $ cd changehat/pam_apparmor
-$ LIBS="-lapparmor -lpam" make
+$ make		# depends on libapparmor having been built first
 $ make install
 
 
 Profiles:
 $ cd profiles
 $ make
+$ make check	# depends on the parser having been built first
 $ make install
 
 
-
 -------------------
 AppArmor Testsuites
 -------------------
@@ -124,6 +141,14 @@ For details on structure and adding tests, see libraries/libapparmor/README.
 $ cd libraries/libapparmor
 $ make check
 
+Profile checks
+--------------
+A basic consistency check to ensure that the parser and aa-logprof parse
+successfully the current set of shipped profiles. The system or other
+parser and logprof can be passed in by overriding the PARSER and LOGPROF
+variables.
+$ cd profiles
+$ make && make check
 
 Stress Tests
 ------------