Support for Signal calls.

Merge in RedPhone

// FREEBIE

jni/openssl/crypto/conf/README

@@ -0,0 +1,73 @@
+Configuration modules. These are a set of modules which can perform
+various configuration functions.
+
+Currently the routines should be called at most once when an application
+starts up: that is before it starts any threads.
+
+The routines read a configuration file set up like this:
+
+-----
+#default section
+openssl_conf=init_section
+
+[init_section]
+
+module1=value1
+#Second instance of module1
+module1.1=valueX
+module2=value2
+module3=dso_literal
+module4=dso_section
+
+[dso_section]
+
+path=/some/path/to/some/dso.so
+other_stuff=other_value
+----
+
+When this file is loaded a configuration module with the specified string
+(module* in the above example) is looked up and its init function called as:
+
+int conf_init_func(CONF_IMODULE *md, CONF *cnf);
+
+The function can then take whatever action is appropriate, for example further
+lookups based on the value. Multiple instances of the same config module can be
+loaded.
+
+When the application closes down the modules are cleaned up by calling an
+optional finish function:
+
+void conf_finish_func(CONF_IMODULE *md);
+
+The finish functions are called in reverse order: that is the last module
+loaded is the first one cleaned up.
+
+If no module exists with a given name then an attempt is made to load a DSO
+with the supplied name. This might mean that "module3" attempts to load a DSO
+called libmodule3.so or module3.dll for example. An explicit DSO name can be
+given by including a separate section as in the module4 example above.
+
+The DSO is expected to at least contain an initialization function:
+
+int OPENSSL_init(CONF_IMODULE *md, CONF *cnf);
+
+and may also include a finish function:
+
+void OPENSSL_finish(CONF_IMODULE *md);
+
+Static modules can also be added using,
+
+int CONF_module_add(char *name, dso_mod_init_func *ifunc, dso_mod_finish_func
+*ffunc);
+
+where "name" is the name in the configuration file this function corresponds
+to.
+
+A set of builtin modules (currently only an ASN1 non functional test module)
+can be added by calling OPENSSL_load_builtin_modules(). 
+
+The function OPENSSL_config() is intended as a simple configuration function
+that any application can call to perform various default configuration tasks.
+It uses the file openssl.cnf in the usual locations.
+
+